Decopper
除铜, 脱铜
🗣️ 情景例句
I never understand what you are talking about, maybe it's the language barrier.
我从不知道你在说什么，也许这就是语言障碍吧。
Could you hold the door open, please?
请让门继续开着好不好？
By then, however, in many places the grass had already taken root.
然而到那时，很多地方的草已经生了根。