Blastula
n. 囊胚
🗣️ 情景例句
Hi, Susan.
嗨 Susan。
It is my pleasure to introduce the keynote speaker for today.
我很荣幸地介绍今天的主讲人。
All that is in my mind when I meet a young person.
每逢我遇到年轻人，脑子里就想到，