Blastulation
囊胚形成
🗣️ 情景例句
Thank you.
谢谢 。
One ploughs, another sow; who will reap no one knows.
有的耕，有的播，谁来收获很难说。
and secondly, those whose work and pleasure are one.
第二类人的工作和娱乐是一回事。