Polyfluoride
多氟化物
🗣️ 情景例句
That's right. And have a good time in New York.
对。祝你在纽约玩得愉快。
When I saw they had left, I was shocked to tears.
当我目睹他们离去时，我悲伤得落下了眼泪。
This is a bus stop. The people are waiting for a bus. They are stand in line.
这是一个公共汽车站。人们在等车。他们站成行。