Blastulation
囊胚形成
🗣️ 情景例句
What's that?
什么事？
Don't give up.
别放弃。
In all the less controversial fields, like the study of cacti or termites or the nature of nebulae,
在一切争议较小的领域里，如对仙人掌、白蚁或星云性质的研究，