One of the best features of this handy and portable application is that it is totally free.

其中一个最好的特点，这既方便携带的应用是：它是完全免费服务。

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Many subtle issues can cause problems even in a well-written, highly portable application, so this article Outlines these issues and suggests ways to deal with them.

很多琐碎的问题都可能导致产生问题，即使在一个编写得非常好的高度可移植的应用程序中也是如此，因此本文将对这些问题进行归纳总结，并给出解决这些问题的一些方法建议。

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I would really like to see a portable version of an application like this.

我很希望能够看到一个这样的程序的便携版本。

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Concerns exist over the application of solar energy in portable devices such as cell phones, which are typically stored in pockets or purses and therefore are not constantly exposed to light.

FORBES: iPhone 2.0: Solar-Powered Mobility

Secure, prerecorded digital music for portable MP3 music players is only one obvious application.

FORBES: Ten O'Clock Tech: Stamp-Sized Storage

For now, portable hardware can't hack such a complicated application.

FORBES: Magazine Article