Commutations
(commutation 的复数) n. 交换, 变换, 代替\\n[电] 整流
🗣️ 情景例句
but this is too much!
但是这太令人难以置信了！
You'll hurt your thumb, if you don't take care.
你不专心的话，就会伤到你的拇指。
What on earth has happened to trouble you so?
到底发生什么事让您如此发愁？