名詞
音樂檔案類型,即係標準聲頻層4(MPEG-1 Audio Layer4)嘅英文縮寫。因為壓縮程度高,所以與原檔相比音質略差但容量細好多,因此好廣泛咁被應用。 shorthand of MPEG-1 Audio Layer4, a type of music files
名詞
比起mp3,可以播更多格式嘅音樂播放器(量詞:部) music player which can play more formats than an mp3 player
呢部唔係iPod,只係一部mp4。
呢部唔系iPod,只系一部mp4。
This is not an iPod. It's just an mp4 player.