A：And lightweight, too. It'll play for 20 hours on two AA batteries!

　　而且MP3也很轻呢。它用两个AA电池，就可以播放二十小时的音乐！

　　B：Cool! The sound is great. These earphones are awesome!

　　酷！声音好棒。这耳机真不赖！

　　A：And they're really safe. They'll protect your ear from sound damage.

　　它们也很安全，可以保护耳朵避免声音过大而受损。

　　B：You certainly need that. You always pump the volume up way too high.

　　你的确需要它。你总是把音量开得太大。

　　A：I know. And you can also hear outside noises while you listen to music.

　　我知道。而且听音乐的同时，你依然能听到外界的声响。

　　B：You're right! So I can listen to music while riding my motorbike!

　　你说得对！这下我可以在骑摩托车的时候听音乐了！