“胚形成”造句
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''.'囊'.''胚之前且处于胚胎''.'期'. ''内的球形裂球群,由受精卵细胞的分裂而成.
The spherical embryonic mass of blastomeres formed before and resulting from cleavage of the fertilized ovum.