Commutators
(commutator 的复数) n. 换向器, 整流器\\n[化] 对易式; 整流器
🗣️ 情景例句
You must be very tired after the journey.
旅行之后，您一定累了吧！
Judge not a book by its cover.
评定一本书，不能凭封面。
At 2,473 metres, it is the highest mountain pass in Europe.
海拔2，473O米，是欧洲最高的山口。