In most advanced areas such as United States, Europe and Japan, city wireless network coverage has reached a high density.

在美国、欧洲和日本等发达地区，无线互联网已实现城市高密度覆盖。

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And yet a study from the same year of the wireless spectrum devoted to cell phone signals in New York City found that almost half of that spectrum was in use.

并且同一年的关于纽约手机信号的无线频谱的调查发现，将近一半的频谱处于使用状态。

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City skyscrapers block wireless signals, and office workers using cellphones at their desks clog networks originally designed for people on the go.

城市摩天大楼阻碍无线号，而且办公室上班族在写字台前面坐着用手机也妨碍网络信号，因为手机网络原本是给暴走族设计的。

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She likes the idea of a free city wireless network, but says it just doesn't work well enough to rely on it.

NPR: New Orleans May Lose Wireless Network

So late last summer, Mayor Gavin Newsom promised that he would find a way to blanket the city with free wireless.

NPR: San Francisco Weighs Wi-Fi Plans

Time Warner Cable announced new city-wide wireless service for its Austin customers.

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