Difluoride
二氟化物
🗣️ 情景例句
You want icq in your drink?
你想在酒里面加冰吗？
There was a big crowd and we had difficulty getting a taxi.
外面有一大群人并我们有很困难招一辆出租车。
Can I see your licence, please?
请让我看看你的车证好吗？