It can also stop them from becoming lost in the Internet and online games.
它还可以防止他们沉迷互联网和网络游戏。
The mobile phone President Bush's twin daughter, Barbara, lost in Buenos Aires - was reportedly up for grabs on an internet auction site.
据报道,不久前布什双胞胎女儿芭芭拉在布宜诺斯艾利斯被抢的手机近日竟现身一拍卖网站。
This year, a prototype iPhone 5 was reportedly lost in a San Francisco bar, and sold via the Internet.
据说今年iPhone5的原型机也落在旧金山的一家酒吧里,并在网上出售。
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