As a consequence, television broadcasters now need little more than half the spectrum they hogged before switching to digital.

结果，电视广播公司现在仅需数字转换前所攫取频谱的一半。

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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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Autistic spectrum disorder (ASD) is a lifelong condition caused by abnormalities in the development of the brain that affects around half a million people in the UK.

泛自闭症障碍(ASD)是大脑发育异常造成的一种终生的症状，这种症状大约影响着英国50万人的生活。

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Through partnerships with 250 medical organizations and Web sites -- including the American Medical Association, Physicians Online and Nursing Spectrum -- Bhan says he has access to more than half the estimated 350, 000 doctors and 835, 000 nurses who are on- line nationwide.

FORBES: What the doctor ordered

The final pavilion, 'Reform and Inspire', focuses on the little known sequel to the Crimean years: the half-century during which Nightingale's reforming power was felt across the entire public health spectrum - not just nursing, but also hospital design, midwifery, workhouse reform, army health reform, together with the pioneering use of statistical data to record and analyse the nation's health.

BBC: Florence Nightingale: Legend of the Lady with the Lamp