Fluorocarbon
[建] 碳氟化合物
🗣️ 情景例句
What's the nature of the problem?
是什么样的问题？
I will fix it for you.
我会为你修理。
Today, although the old Galileo lives on in many popular writings,
今天，虽然已故的伽利略继续活在许多通俗读物中，