Hydrofluorocarbon
= HFC
✅ 同义词
🗣️ 情景例句
I care about new fixtures in the hallways--
我关心走廊的新灯具，
How long will it take for a package to get to California?
你把包裹寄到加州要多长时间?
I think we're lost! What shall we do?
“我想我们迷路了！我们该怎么办呢？”