细胞的这种向里推进标志着原肠胚形成的开始.This pushing - in of cells marks the start of gastrulation.外胚层囊胚的外层,在原肠胚形成之后生后外胚层组织.The outer layer of a blastula that gives rise to the ectoderm after gastrulation....
They did not have even an approximate idea what the Germans really wanted.他们完全不清楚德国人真正想要什么。Calder ? n provided a method to approximate the conductivity by the measurement of boundary data.Calder? n给出了一种对边界值的测量而近似求解导电率的方法...
如果把所有的元音列在前面，字母表可能会更为合理一些。The alphabet might be more rational if all the vowels came first.单词my和thigh中的元音并不难发。The vowel in words like "my" and "thigh" is not very difficult.每种语言都有不同的元音系统。Each language has a different vow...
The pons, the cerebellum and the medulla oblongata composed the hindbrain.脑桥 、 小脑和延髓组成了后脑.Ucn III induced Fos expression in several areas forebrain and hindbrain.结果发现,UcnIII诱导了大鼠前脑及后脑广泛脑区的Fos表达.The anterior part of the e...