Difluoride
二氟化物
🗣️ 情景例句
Don't waste your breath trying to persuade them, they'll never listen.
别白费口舌规劝他们，他们不会听你的话。
You'll hurt your finger, if you don't take care.
你不专心的话，就会伤到你的手指。
Yes, good idea.
好主意呀。