Free smart phone apps might seem like a deal. But they can have a hidden cost: your phone's battery life. That's because free apps often serve up ads, which can drain your battery more than using the app itself does.
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60秒科學(xué):智能手機(jī)的隱藏成本
時(shí)間:2012-04-12 10:44:46 來(lái)源:scientificamerican 編輯:beck 每天三分鐘英語(yǔ)輕松學(xué)
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