Hexafluoropropylene
[化] 六氟丙烯
🗣️ 情景例句
If you really mean it,
假如你是说真的，
He should have a long spoon that sups with the devil.
跟坏人打交道，要特别小心。
Because the equipment for adding sound to films had not yet been developed.
因为给电影配音的设备还没有研制出来。