Biruet
[化] 缩二脲
🗣️ 情景例句
OK. Sit down, please. What would you like, Chinese tea or coffee?
好的，请坐。你想喝点什么，中国茶还是咖啡？
When the weather is hot, we turn on the air conditioner.
天热的时候就开空调。
Can you ring up the bus company?
你能给汽车公司打个电话吗？