Communtator compound
[建] 用于换向器或整流器的润滑剂
🧩 词语组成解析
[建] 换向器, 整流器, 整流子
🗣️ 情景例句
It's a far cry from what I expected.
这离我想要的差远了。
He says it's too dangerous.
他说这样做很危险。
That's easier said than done!
说来容易做起来难哪！