Ferramic
粉末状的铁磁体
🗣️ 情景例句
It's about the size of the United States, but it has a population of only 16.5 million.
它和美国一般大，但人口却只有一千六百五十万。
I'm afraid you're too particular about your food.
我怕你对食物太考究了。
We're going to be placing a large order soon.
我们马上就会下一张大订单了。