Perfluoroallene
[化] 全氟丙二烯
🗣️ 情景例句
We're also very glad to have practical business dealings with you.
我们也很高兴能和贵公司建立实质性的业务联系。
To skydive
漫游太空
I didn't mind, because it was really cold in Moscow. There was thick snow everywhere!
我并不介意，因为莫斯科的天气非常寒冷。到处都可看见厚厚的雪！