如配备3G无线上网功能则需额外支付130美元。
An extra $130 is needed to equip it with third-generation wireless capability.
有调查显示高达70%的飞机乘客希望有无线上网功能。
Surveys show that as many as 70 percent of passengers want wireless Internet, also known as Wi-Fi.
这可能是因为Kindle内置了手机数据传输网络，可以免费免费实现无线上网功能。
This is possible because the Kindle comes with free, built-in wireless Internet access, using a cellular data network.
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