Polyiron
多晶形铁, 树脂羰基铁粉
🗣️ 情景例句
At home I like reading books and listening to music.
我喜欢在家里看书或听音乐。
We've got to get a mirror for the bashroom.
我们必须有一面镜子放在浴室。
On this occasion, however, it had slowed down considerably.
然而这一次它的速度慢多了。