Polyiron
多晶形铁, 树脂羰基铁粉
🗣️ 情景例句
I guess you know what's best for the family and for me.
我猜想你们一定知道怎样做对整个家庭和我是最有利的。
I've studied the reports of past meetings.
我学习了以往的会议记录。
I could say nothing but that I was sorry.
我除了说“对不起”之外，什么也说不出来。