Polyiron
多晶形铁, 树脂羰基铁粉
🗣️ 情景例句
Whatever you decide is all right with me.
不管你怎么决定我都会赞成的。
How many workshops are there in your factory?
你们厂有多少车间？
Beautiful day, isn't it?
今天天气真好，是不是？