Nonconservation
不守恒
🗣️ 情景例句
Yes. The number, please,of the Staten Island Ferry lost-and-found office.
我想问一下Staten岛渡轮失物招领处的电话号码。
By what time should I check in?
我该什么时间办理登机手续呢？
Hello, Helen.
你好，海伦