Fluoram
二氟化铵
🗣️ 情景例句
My mother is terrific at any kind of sewing.
我母亲做任何针线活都棒极了。
We can see the train station from our house.
从我们的屋子可以看到火车站。
That's an English car!
那才是一辆英国产的小汽车！