Fluorocarbon
[建] 碳氟化合物
🗣️ 情景例句
Do you know when the bus for the Summer Palace leave?
你知道到颐和园的车几点开吗？
The devil scares me.
我害怕魔鬼。
and if a single curved glass would distort nature, how much more would a pair of them?
何况一片曲面镜就可歪曲自然，那么伽利略的两片曲面镜对自然的歪曲又该多大呢？