MP3 player

这个MP3播放器很小，可以放在口袋里。

This ___MP3 ___player is small and fits in my pocket.

我哥哥把他的旧MP3播放器给了我。

My brother gave me his old ___MP3 ___player.

我需要给我的MP3播放器充电。

I need to charge my ___MP3 ___player.

我朋友和我都有MP3播放器。

My friend and I both have ___MP3 ___players.