Hydrofluorocarbon
= HFC
✅ 同义词
🗣️ 情景例句
What's wrong?
什么病
Prosperity gains (or makes) friends, and adversity tries them.
顺境交朋友，逆境试真情。
He was just able to lie down on the ground, but could not stand up.
他只能躺在地上，但不能站起来。