Sonac
超声传感器
🗣️ 情景例句
That was very kind of you.
你真周到。
You will leap for joy when you hear the answer.
如果你听到了答案，你会高兴的跳起来的。
The development of films with sound became a problem for Chaplin.
有声电影的研制对卓别林来说就成了问题。