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.另一派认为它们是从微小动物的 “ 种子 ” 或 “ 胚 ” 形成的.Others belived that they were formed from the'seeds " or " germs " of these animalcules.桑椹胚形成于'&...
There're some savages living in the forest.森林里居住着一些野人.They were savages, but savages of a high order.他们是野蛮人, 不过属于高级的野蛮人.He is content with such conversation as can be had among savages.他津津乐道那种不正当的交往,就像在野蛮人中那样....