Subfluoride
低氟化物, 氟化低价物
🗣️ 情景例句
I'm stressed out. I need a vacation.
我筋疲力尽了，我要休假！
My cell phone's out of batteries.
我手机没电了。
Yes. I wish we could go to the seaside today.
是的。我们今天要是能去海滨就好了。