Transonics
跨音速空气动力学
🗣️ 情景例句
Pretty good, but I got caught in a traffic jam in Beijing.
很好，不过在北京碰上了交通阻塞。
Internet is number one!
国际互联网真是顶呱呱！
Everything's very quiet.I'm sure there's no one at home.
毫无动静，肯定家里没有人。