Hypersonics
特超声(速空气动力)学
🗣️ 情景例句
How can I refuse when you look at me like that?
你那样子看我，叫我怎么拒绝啊？
Are you finished?
请问您还用吗？
They are often more industrious, useful citizens than those who are never late.
他们与那些从不迟到的人相比，常常是更勤奋有用的公民。