Hexafluoroethane
[化] 六氟乙烷
🗣️ 情景例句
I gave that idea up a long time ago.
我很久以前就放弃了那个想法了。
Please let me apologize.
请让我致歉意。
I have just received a letter from my brother, Tim.
我刚刚收到弟弟蒂姆的来信，