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1. 单词complex 联想记忆:
2. 在西方市场,《魔兽世界》经典怀旧服的表现亦不俗。
3.   "Was happily bought three days since."
4.   BEF0RE entering on the subject of this chapter, I must make a few preliminary remarks, to show how the struggle for existence bears on Natural Selection. It has been seen in the last chapter that amongst organic beings in a state of nature there is some individual variability; indeed I am not aware that this has ever been disputed. It is immaterial for us whether a multitude of doubtful forms be called species or sub-species or varieties; what rank, for instance, the two or three hundred doubtful forms of British plants are entitled to hold, if the existence of any well-marked varieties be admitted. But the mere existence of individual variability and of some few well-marked varieties, though necessary as the foundation for the work, helps us but little in understanding how species arise in nature. How have all those exquisite adaptations of one part of the organisation to another part, and to the conditions of life, and of one distinct organic being to another being, been perfected? We see these beautiful co-adaptations most plainly in the woodpecker and missletoe; and only a little less plainly in the humblest parasite which clings to the hairs of a quadruped or feathers of a bird; in the structure of the beetle which dives through the water; in the plumed seed which is wafted by the gentlest breeze; in short, we see beautiful adaptations everywhere and in every part of the organic world.Again, it may be asked, how is it that varieties, which I have called incipient species, become ultimately converted into good and distinct species, which in most cases obviously differ from each other far more than do the varieties of the same species? How do those groups of species, which constitute what are called distinct genera, and which differ from each other more than do the species of the same genus, arise? All these results, as we shall more fully see in the next chapter, follow inevitably from the struggle for life. Owing to this struggle for life, any variation, however slight and from whatever cause proceeding, if it be in any degree profitable to an individual of any species, in its infinitely complex relations to other organic beings and to external nature, will tend to the preservation of that individual, and will generally be inherited by its offspring. The offspring, also, will thus have a better chance of surviving, for, of the many individuals of any species which are periodically born, but a small number can survive. I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection, in order to mark its relation to man's power of selection. We have seen that man by selection can certainly produce great results, and can adapt organic beings to his own uses, through the accumulation of slight but useful variations, given to him by the hand of Nature. But Natural Selection, as we shall hereafter see, is a power incessantly ready for action, and is as immeasurably superior to man's feeble efforts, as the works of Nature are to those of Art.We will now discuss in a little more detail the struggle for existence. In my future work this subject shall be treated, as it well deserves, at much greater length. The elder De Candolle and Lyell have largely and philosophically shown that all organic beings are exposed to severe competition. In regard to plants, no one has treated this subject with more spirit and ability than W. Herbert, Dean of Manchester, evidently the result of his great horticultural knowledge. Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult at least I have found it so than constantly to bear this conclusion in mind. Yet unless it be thoroughly engrained in the mind, I am convinced that the whole economy of nature, with every fact on distribution, rarity, abundance, extinction, and variation, will be dimly seen or quite misunderstood. We behold the face of nature bright with gladness, we often see superabundance of food; we do not see, or we forget, that the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life; or we forget how largely these songsters, or their eggs, or their nestlings are destroyed by birds and beasts of prey; we do not always bear in mind, that though food may be now superabundant, it is not so at all seasons of each recurring year.I should premise that I use the term Struggle for Existence in a large and metaphorical sense, including dependence of one being on another, and including (which is more important) not only the life of the individual, but success in leaving progeny. Two canine animals in a time of dearth, may be truly said to struggle with each other which shall get food and live. But a plant on the edge of a desert is said to struggle for life against the drought, though more properly it should be said to be dependent on the moisture. A plant which annually produces a thousand seeds, of which on an average only one comes to maturity, may be more truly said to struggle with the plants of the same and other kinds which already clothe the ground. The missletoe is dependent on the apple and a few other trees, but can only in a far-fetched sense be said to struggle with these trees, for if too many of these parasites grow on the same tree, it will languish and die. But several seedling missletoes, growing close together on the same branch, may more truly be said to struggle with each other. As the missletoe is disseminated by birds, its existence depends on birds; and it may metaphorically be said to struggle with other fruit-bearing plants, in order to tempt birds to devour and thus disseminate its seeds rather than those of other plants. In these several senses, which pass into each other, I use for convenience sake the general term of struggle for existence.A struggle for existence inevitably follows from the high rate at which all organic beings tend to increase. Every being, which during its natural lifetime produces several eggs or seeds, must suffer destruction during some period of its life, and during some season or occasional year, otherwise, on the principle of geometrical increase, its numbers would quickly become so inordinately great that no country could support the product. Hence, as more individuals are produced than can possibly survive, there must in every case be a struggle for existence, either one individual with another of the same species, or with the individuals of distinct species, or with the physical conditions of life. It is the doctrine of Malthus applied with manifold force to the whole animal and vegetable kingdoms; for in this case there can be no artificial increase of food, and no prudential restraint from marriage. Although some species may be now increasing, more or less rapidly, in numbers, all cannot do so, for the world would not hold them.
5. 她建议:谈话开始时要有同理心和同情心,不要表现出家长式作风。
6. 英国最大的网络供应商之一BT表示,禁止华为将耗费大量的资金。


1.   "Then I saw Phaedra, and Procris, and fair Ariadne daughter of themagician Minos, whom Theseus was carrying off from Crete to Athens,but he did not enjoy her, for before he could do so Diana killed herin the island of Dia on account of what Bacchus had said against her.
2. 这不是欢喜传媒第一次与大导合作网剧了,从陈可辛、王家卫开始,欢喜传媒绑定大导的条约里就加上了网剧的合作。
3. We were indeed to learn the language, and not only that, but to teach our own. There were blank books with parallel columns, neatly ruled, evidently prepared for the occasion, and in these, as fast as we learned and wrote down the name of anything, we were urged to write our own name for it by its side.
4. 这也是她认为的“互联网模式”中最重要的一点——重视用户体验,而且,在公司刚刚起步时,她坚定地认为分时租赁还没有引爆市场的最大原因就是使用起来太不方便。
5. ”2013年至2016年1-9月,拉卡拉个人支付收入分别为2.04亿元、2.39亿元、2.11亿元、1.11亿元。
6.   The next afternoon she went to the wood again. She followed the broad riding that swerved round and up through the larches to a spring called John's Well. It was cold on this hillside, and not a flower in the darkness of larches. But the icy little spring softly pressed upwards from its tiny well-bed of pure, reddish-white pebbles. How icy and clear it was! Brilliant! The new keeper had no doubt put in fresh pebbles. She heard the faint tinkle of water, as the tiny overflow trickled over and downhill. Even above the hissing boom of the larchwood, that spread its bristling, leafless, wolfish darkness on the down-slope, she heard the tinkle as of tiny water-bells.


1. 该装置还利用手腕中的8个多通道肌电信号传感器让假手对来自手臂的肌肉信号进行处理,从而能够更准确地控制抓握等手部动作
2.   This king Alla had such compassioun, As gentle heart is full filled of pity, That from his eyen ran the water down "Now hastily do fetch a book," quoth he; "And if this knight will sweare, how that she This woman slew, yet will we us advise* *consider Whom that we will that shall be our justice."
3. ['?n'steibl]
4. 事发时,警方正准备逮捕一名男子,此时该男子开枪击中一名警察头部,造成其重伤。
5.   "`Where could I find him?'
6.   "Go," he said to a gardener who was working near, "and get that cradle out for me."


1. 但是在IPO上市前,永安行却终止了与蚂蚁金服和深创投等机构的投资合作,并签订终止协议永安公司管理层认为无桩共享单车业务未来发展前景看好,但近日社会上存在部分对无桩共享单车投放和运营管理提出异议的观点,公司本着对投资者负责的态度和谨慎投资的原则,公司与上述投资机构再次协商,各方同意放缓投资进度。
2. 万物得其本者生,百事得其道者成。
3.   Now grasp my doublet - we at last A central peak have reached, whichshows, If round a wondering glance we cast, How in the mountain Mammonglows,
4. 加之日常一些不良的膝关节使用习惯,加速软骨耗损,我们的膝关节两端的骨头就会出现生摩的情况,从而引发无菌性炎症,出现疼痛、红肿、灵活性下降等症状。
5. 小团队的虽然灵活,也面临了巨大的压力和挑战。
6.   The Lady fixing a stedfast eye upon him, well liking his gentlelanguage and behaviour, perceiving also, how fitly her deceasedhusbands apparell was formed to his person, and resembling him inall familiar respects, he appeared (in her judgement) farre beyond theChambermaides commendations of him; so praying him to sit downe by herbefore the fire, she questioned with him, concerning this unhappynights accident befalne him, wherein he fully resolved her, and sheewas the more perswaded, by reason of his servants comming into theTowne before night, assuring him, that he should be found for himearly in the morning.


1. 但短视频的火热带来了新选择。
2. 当天夜里,他在外婆的灵堂里跪了一晚上。
3.   Then Ulysses said, "Sir, it is right that I should say somethingmyself. I am much shocked about what you have said about theinsolent way in which the suitors are behaving in despite of such aman as you are. Tell me, do you submit to such treatment tamely, orhas some god set your people against you? May you not complain of yourbrothers- for it is to these that a man may look for support,however great his quarrel may be? I wish I were as young as you areand in my present mind; if I were son to Ulysses, or, indeed,Ulysses himself, I would rather some one came and cut my head off, butI would go to the house and be the bane of every one of these men.If they were too many for me- I being single-handed- I would ratherdie fighting in my own house than see such disgraceful sights dayafter day, strangers grossly maltreated, and men dragging the womenservants about the house in an unseemly way, wine drawn recklessly,and bread wasted all to no purpose for an end that shall never beaccomplished."

网友评论(96250 / 47979 )

  • 1:金钟淑 2020-08-03 11:52:29


  • 2:艾玛乡 2020-07-25 11:52:29

      We were left to ourselves now, and looked very blank, I recollect, on one another. For myself, I felt so much self-reproach and contrition for my part in what had happened, that nothing would have enabled me to keep back my tears but the fear that Steerforth, who often looked at me, I saw, might think it unfriendly - or, I should rather say, considering our relative ages, and the feeling with which I regarded him, undutiful - if I showed the emotion which distressed me. He was very angry with Traddles, and said he was glad he had caught it.

  • 3:赵汀生 2020-07-31 11:52:29

      The child lifted an arm, pointing down the drive. `At th' cottidge.'

  • 4:许广汉 2020-07-29 11:52:29


  • 5:宋华勤 2020-08-01 11:52:29

    Somehow the sight of the dear little sixpence was good for both of them. It made them laugh a little, though they both had tears in their eyes.

  • 6:朱莉娅·罗伯茨 2020-08-07 11:52:29

      'Peggotty, do you mean, sir?'

  • 7:周四妃 2020-07-28 11:52:29


  • 8:罗杰·埃姆斯 2020-07-21 11:52:29

      The Caliph being seated on his throne with the boy next him, the parties to the suit were ushered in. One by one they prostrated themselves, and touched the carpet at the foot of the throne with their foreheads. When they rose up, the Caliph said: "Now speak. This child will give you justice, and if more should be wanted I will see to it myself."

  • 9:刘胜章 2020-08-01 11:52:29

      'Why,' thought I, 'does she not explain that she could neitherclean her nails nor wash her face, as the water was frozen?'

  • 10:向凯文 2020-08-07 11:52:29