🧩 词语组成解析
[解、动]胎盘形成
🗣️ 情景例句
I have to return this book to the library.
我得把书还回图书馆了。
Dinner is on me.
晚饭我请客。
It's a pleasure. What time is it by your watch, please?
不客气。请问，你的表几点了？