没有一种本地平台给予了开发者这种生产力，放手让他们能够在多个平台间移植。
No one native platform gives developers that kind of productivity let alone giving them the ability to port across platforms.
即使对于类似的设备(如pda和高级智能电话)，在两者间建立可移植性也常常使一种设备超负荷而另一种设备利用不充分。
Even for similar devices such as PDAs and advanced smart phones, establishing portability between the two often poses a strain to one device and underutilization of the other.
XML被设计成一种在不同应用程序间交换数据的可移植方式；数据表示则通常留给应用程序本身。
XML was designed as a portable means to exchange data between different applications; data presentation is often left to the applications themselves.
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