Shm
[化] 简谐运动
🗣️ 情景例句
I believe my English fluency is quite good.
我认为自己的英语相当的流利。
If you wouldn't mind, I could use a hand.
如果你不介意的话，我可能要你帮个忙。
They put their hands behind their backs, so you can't see their hands.
他们将手放在背后，这样你就看不见他们的手了。