On the other hand, it need not be that way especially if you have a portable MP3 player.

在另一方面，它不需要特别的方法，如果你有便携式MP3播放。

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This paper illustrates the characteristics and advantages of SOC technology by a portable MP3 player.

本文以便携式MP 3播放器的设计为例，从一个方面展示了SOC技术的特点和优势。

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Portable MP3 player generally adopts the nonvolatile storage chip to make the memory at present, the capacity is small, the unit has high costs, and does not adapt to play for a long time.

目前便携式MP3播放器一般采用非易失性存储芯片作存储器，容量小、单位成本高，且不适应长时间播放。

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And while it is a rather impressive one, it remains, well, a portable MP3 player.

FORBES: Magazine Article

On Oct. 23, Apple announced that this "breakthrough device" is a portable MP3 player.

FORBES: Apple Unwraps IPod

The robot, brought to you by TOSY Robotic, is also a portable MP3 player with 2GB of internal storage.

FORBES: Justin Bieber Shows Off Dancing Robot 'mRobo' At CES 2012