Hcfcs
abbr. hydro-chlorofluoro-carbon 【化学】氢化含氯氟烃
🗣️ 情景例句
so it's my pleasure
所以现在我很乐意
Well, it's too bad that you have to go.
哦，真遗憾，你一定要走。
He did everything very slowly.
他做什么都很慢。