Ambient radio waves have largely been ignored as a potential power source until recently, because the power of a broadcast radio signal rapidly decreases with distance.
直到最近环境无线电波才格外受到重视成为一种潜在的电源，这是因为广播电台的无线电信号发电随着距离的增加而锐减。
Television networks have broadcast images of mud-covered communities, cars upended on city streets and reported huge Numbers of villagers without drinking water, food and power.
国家电视广播网已播放了被污泥覆盖社区的录像，汽车倒在道旁，并报道大量的村民没有饮用水，食品和电力供应。
China's push to get soccer into schools and make the country a power in the sport has led companies to pay big sums for broadcast rights.
中国在学校推广足球、把中国变成足球强国方面的努力，已导致公司为争夺转播权投入大笔资金。
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