Compound pendulum
[化] 复摆
🧩 词语组成解析
🗣️ 情景例句
It's no use crying over spilt milk. What's done cannot be undone.
覆水难收。
He must have three more weeks of rest before he is released.
他在出院以前，还需要三周时间的静养。
We're going to pay by check.
我们要开票付款。