19 年前
视频简介
Consumers love - and live on - their smartphones, tablets and laptops. A cascade of new devices pours endlessly into the market, promising even better communication, non-stop entertainment and instant information. The numbers are staggering. By 2020, four billion people will have a personal computer. Five billion will own a mobile phone. But this revolution has a dark side, hid...。周五的晚上,四个人被困电梯,他们必须自己想法脱身....。
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