Gastrulatio
原肠形成
🗣️ 情景例句
I would like to buy some stamps, please.
我想买些邮票。
First, I would like to express to all of you here our sincere welcome.
首先，我向在坐的诸位表示诚挚的欢迎。
Oh, no, don't do that.
哦，不。请不要这样。