Autooscillation
自振荡
🗣️ 情景例句
Next time you are in town, drop me a line.
下次你在城里的时候给我写信吧。
The daily rate is $32.00 plus 39 cent per mile.
日租金32美元，每英里外加3角9分。
I'd like to cash a traveler's check please.
我想兑换旅行支票。