Girls have a more finely tuned aural structure; they can hear higher frequencies than boys and are more sensitive to sounds.

女孩子的声音感受系统更加灵敏，她们能听到更高频率的声音，也对声音更加敏感。

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West and east Japan are unable to share electricity because of different transmission frequencies dating back more than a century.

目前日本的西部和东部不能够共用电能是因为不同的传输频率导致的，而这在一百多年前就如此了。

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Conditional frequencies are perhaps more interesting than plain histograms.

条件频率分布可能比普通的直方图更有趣。

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Patwari plans more research on whether different or multiple radio frequencies might detect breathing better than the one 2.4 gigahertz frequency used in the study.

ENGADGET: Researchers use wireless network to monitor breathing, could save lives

Google has long been involved in public trials to prove the technology which operates at lower frequencies than some cell networks, allowing signals to be more easily transmitted through buildings and other obstacles and across longer distances can work.

WSJ: Google to Fund, Develop Wireless Networks in Emerging Markets

But with more than 300 million GPS receivers out there designed to listen to not only GPS frequencies but neighboring bands, there are facts on the ground that will likely prevent LightSquared from making full use of its FCC-licensed spectrum.

FORBES: Cellphone Manufacturers Solved GPS Interference Problem