为什么装运垃圾的车要播放一曲音乐呢？

Why does the rubbish truck play a piece of music?

youdao

敲一敲，晃一晃，点一点它，用户就可以实现如查看电话和短信，阅读RSS新闻和微博，设置还有播放音乐和更换下一曲的功能。

Users are able to knock, shake and tap on their Von phone to do things such as checking calls and text messages, viewing RSS feeds and tweets, and even playing and changing music.

youdao

敲一敲，晃一晃，点一点它，用户就可以实现如查看电话和短信，阅读RSS新闻和微博，设置还有播放音乐和更换下一曲的功能。

Users are able to knock, shake and tap on their Von phone to do things such as checking calls and text messages, viewing RSS feeds and tweets, and even playing and changing music.

youdao