Commutators
(commutator 的复数) n. 换向器, 整流器\\n[化] 对易式; 整流器
🗣️ 情景例句
The change is yours.
找回的钱给你。
In the world, who knows not to swim goes to the bottom.
处世似游泳，不会即下沉。
Officials from Greenwich Observatory have the clock checked twice a day.
格林尼治天文台的官员们每天两次派人矫正此钟。