Timetested
经过时间检验的
🗣️ 情景例句
What's the spelling of your family name, sir?
您的姓怎么拼，先生？
The petroleum region is centered largely in the north.
那里的石油区大部分集中在北部。
Do we have to wear the helmets?
我们得戴上防护帽吗？