Hexafluorobenzene
[化] 六氟苯; 六氟代苯
🗣️ 情景例句
He accepted an offer of help.
他接受了援助的建议。
Now that I have to stand up to introduce myself.
我不得不站起来介绍一下我自己。
Because the Moon has only an eightieth of the Earth's mass,
因为月球的重量只有地球的1/8，