Ferramic
粉末状的铁磁体
🗣️ 情景例句
I got it.
我猜对了。
Don't forget to phone to let us know you arrived safely.
不要忘记打电话，告诉我们你已经安全抵达。
We can do that at the meeting tomorrow.
我们明天开会时再签订吧。