Pentafluorinated
五氟化的
🗣️ 情景例句
Bye-bye.
再见。
How people design computer games is beyond me.
我不懂得电脑游戏是怎么设计的。
Since then, they have been trying to find out how the fire began.
从那时起，他们一直试图找出起火的原因。