Polyiron
多晶形铁, 树脂羰基铁粉
🗣️ 情景例句
The school was attended almost entirely by local children.
上这所学校念书的几乎全是当地的孩子。
He has a car.
他有一辆车。
What do you plan to do next?
下一步您打算导演什么剧？