natural selection什么意思解释？

the theory of natural selection, first propounded by Charles Darwin查尔斯∙达尔文首先提出的物竞天择理论Natural selection ensures only the fittest survive to pass their genes on to the next generation.自然选择确保只有最适应环境的物种得以存活下来，把基因传给下一代。All ba...

natural selection的音标：natural selection的英式发音音标为：['nætʃərəl si'lekʃən]natural selection的美式发音音标为：['nætʃərəl sɪ'lɛkʃən]...

They bristled at his denigrating description of their activities.听到他在污蔑他们的活动, 他们都怒发冲冠。The room abounded with screaming children; The garden bristled with toddlers.房间里充满了尖叫的小孩子; 花园充满了初学走路的孩子.Would slay whoever dared confr...

n.鸭跖草，白日开花...

n.理论家，学说创立人，空论家...

除红衣主教和国王之外,不要接受人的非难.Accept criticism from no one except the cardinal and the King.更不必接受人管理和统治!And it certainly does not need to accept human management and governance!他们不会考虑也更不会接受 “ 人非圣贤孰能无过 ” 的人性化观点.These consumers neit...

Our country is thriving and prospering day by day.祖国日益繁荣昌盛.His business is prospering.他生意兴隆.China is prospering with each passing day.中国正在蒸蒸日上....

dawn的第三人称单数（三单）为：dawns...

出售的女装有小号、中号和大号。Women's apparel is offered in petite, regular, and tall models.那家商店卖大号的 、 小号的 、 中号的, 应有尽有.The store sells big ones, small ones, medium ones, or what have you.你要小号的床还是中号的床?Would you like a twin bed or ...

A novel process of acetonitrile recovery from pharmaceutical effluent was designed.设计了一套回收制药废液中乙腈的新工艺.Acetonitrile continuous recovery plant is a subsidiary part of acrylonitrile production unit.乙腈连续回收装置是与丙烯腈生产主装置相配套的.Me...

adj.（指汽车、飞机等）流线型的，经过简化以改善效率的，现代化的v.使成流线型，使合理化(streamline的过去式和过去分词)...

n.（昆虫，甲壳）血蓝质，血蓝蛋白...

ills的音标：ills的英式发音音标为：['ɪlz]ills的美式发音音标为：['ɪlz]...

卡他...

mist的近义词有：fog, mist, smog。下面这些名词都可表示"雾"的含义：fog：指较浓的雾。mist：指轻雾，气象学上称作霭。smog：指工业区的烟和雾相混而造成的又黑又浓的烟雾。...

v.蒙骗( bilk的过去式和过去分词 )...

C点的竖向位移被支座所阻止.Vertical movement of c is prevented by the support.桥面可以在氯丁橡胶支座上自由伸缩.The deck is free to expand on neoprene bearings.只有支座和伸缩缝需要定期检查和调整.Only bearings and extension joints need to be controlled at regular inte...