embryos造句
Evolution can explain why human
embryos look like gilled fishes.
进化论能够解释为什么人类的胚胎看起来象除去了内脏的鱼一样.
A sharp demarcation of adventive
embryos from zygotic
embryos cannot be drawn.
不定胚与合子胚之间不能划分出明显的界限.
Most grass
embryos have a flap - like structure known as the epiblast.
大多数禾本科胚有一片瓣 状 结构通常称为外胚叶.