Commutators
(commutator 的复数) n. 换向器, 整流器\\n[化] 对易式; 整流器
🗣️ 情景例句
That was so thoughtful of you, Michelle.
你想得真周到， Michelle
Who is he?
他是谁？
She wanted to see the doctor because her back hurt.
她是来伦敦看望女儿的。她要看医生是因为背痛。