Letovicite
[矿]酸性铵矾
🗣️ 情景例句
You may be offered coffee, and then you should immediately announce the reason for your visit.
他们会给你冲咖啡，然后你应该尽快说明来意。
I ought to make a phone call.
我应该打个电话。
Come and sit down, Chen Hui.
请过来坐，陈慧。