🧩 词语组成解析
placenta
[plə'sentə]
n. 胎盘，胎座;
🗣️ 情景例句
Please do the work at your own convenience.
请在方便时把这事做一做。
I'm going to try to leave by 10:00.
我争取10点以前离开。
It went direct from my local station and the journey lasted mere hour and seventeen minutes.
这是趟直达车，旅途总共才需1小时17分钟。