Sultones
[化] 磺酸内酯
🗣️ 情景例句
Yes. I'm sorry, but how do you spell your last name, sir?
好的，不过对不起，先生你的姓怎么拼？
Fortune is fickle.
天有不测风云，人有旦夕祸福。
The time I spent at exercises gradually diminished.
我花在锻炼上的时间逐渐减少，