Commutators
(commutator 的复数) n. 换向器, 整流器\\n[化] 对易式; 整流器
🗣️ 情景例句
Not too bad, thank you.
挺好的，谢谢你。
Everything is good when new, but friend when old.
东西新的好，朋友老的好。
The question became one of whether Man could control the disease he had invented.
现在的问题是，人类能否控制住这种人为的疾病。