development phase

• 发育阶段

development phase的用法和样例：

例句

1. This marks the end of the cleavage stage of development.
   这标志着卵裂发育阶段的结束。
2. The central tube produces a lot of oogoniums.The egg chambers contain the oocyte at different development phases.
   卵室内含有不同发育阶段的卵母细胞。