In the 1950s in the USA, most families had just one phone at home, and wireless phones hadn't been invented yet.

在20世纪50年代的美国，大多数家庭只有一部手机，而无线电话当时还没有发明出来。

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If worried, people can text or use headphones to reduce radiation exposure from wireless phones.

如果担心手机会对身体带来危害，人们不妨尽量使用发送信息或者戴上耳机以避免过度暴露在辐射的范围内。

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Multiply the effects from this to industries such as aluminum and wireless phones, and you get.

把这些效应翻番扩展到诸如铝业、手机业，就看到。

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He said fifty-two million wireless phones will be sold in the United States this year.

VOA: special.2010.01.26

"We also carefully consider the sources of exposure of populations to radiofrequency electromagnetic fields, the nature of these fields as they come from various devices, including wireless phones, and we look carefully at the physical phenomenon by which exposure to such fields may perturb biological systems and lead to cancers."

VOA: special.2011.06.06

The F.C.C.chairman also wants to extend all six principles to wireless carriers now that their phones access the Internet.

VOA: special.2009.09.25

Though car phones with cords and antennas were increasingly common then, wireless phones were otherworldly.

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Wireless phones that were once the obscure property of the superrich are now positively pedestrian.

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And the linkage will eventually allow Globo to deliver its plentiful, popular content over wireless phones.

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