Infrasonics
次声学
🗣️ 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。
Do you want to remit the money by air mail or by cable, sir?
您想要航空信还是电汇，先生？
Now, everyone. Listen, please.
同学们，请注意听。