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 not easy being away from home.
离家独闯不容易。
Don't speak all you know, but know all you speak.
不要尽言所知，而要尽知所言。
I don't understand! What do you mean? asked Mrs Brown.
“我不懂！你说的是什么意思？”布朗夫人问道。