Perfluoroallene
[化] 全氟丙二烯
🗣️ 情景例句
My name is Stewart... Malcolm Stewart.
我姓Stewart……Malcolm Stewart。
Observation is the best teacher.
观察为良师。
But I guess we've got some of the most beautiful mountains and countryside in the world.
但我想我们有一些世界上最美的山脉和乡村。