Terfluoride
[化] 三氟化合物
🗣️ 情景例句
I didn't have the heart to tell her that she was not chosen.
我没有勇气告诉她说她没有入选。
Please fill in this disembarkation card.
请你填写这张入境卡。
We are happy to be of help.
我们十分乐意帮助。