Embryologically
在胚胎学上
🗣️ 情景例句
After studying an hour, I finally got the hang of the lesson.
我学习了一个小时，终于理解了这一课的要点。
When the police arrived, I was doing the housework.
当警察来的时候，我在做家务。
Yes, I do. I have two, a son and a daughter.
有两个，一个儿子，一个女儿。