Difluoride
二氟化物
🗣️ 情景例句
Well, there's chocolate and coffee and a little vanilla.
好的。这儿有巧克力冰淇淋、 咖啡冰淇淋和一点香草的。
Did you go to the zoo this morning?
你今早去动物园了吗？
It's nice to finally meet you.
很高兴终于与你见面了。