Polyiron
多晶形铁, 树脂羰基铁粉
🗣️ 情景例句
Sorry to hear that, Lillian.
很遗憾听到这个， Lillian。
You name it!
你说出来。
Yes, I see. How can they get rid of waste water in this way? What a terrible colour the sea is now! It looks as if our class won't be able to bathe at all.
是的，我看见了。他们怎么能这样排放废水呢？海水的颜色多么可怕呀！看来我们班同学根本不能在这里游泳。