光速比声速快很多，这就是为什么在你听到有些人说话之前他们看起来很聪明。

Light travels faster than sound. That's why some people appear bright until you hear them speak.

youdao

光速比声速快很多，这就是为什么在你听到有些人说话之前他们看起来很聪明。

Light travels faster than sound. That's why some people appear bright until you hear them speak.

youdao