Hydrofluorocarbon
= HFC
✅ 同义词
🗣️ 情景例句
but this is an important opportunity.
但这是一次很重要的机会。
What's the size of your shoes?
你的鞋多大尺寸？
The secretary told me that Mr.Harmsworth would see me.
秘书告诉我说哈姆斯沃斯先生要见我。