Thirdy, for teenager, it is too easily become shortsighted, because they except studying, someone like playing games or sending message and enter QQ by mobile phone.
对于青少年来说，更易造成近视，因为他们除了学习，还有人喜欢玩游戏，或用手机发短信或登录手机QQ；
Thirdy, for teenager, it is too easily become shortsighted, because they except studying, someone like playing games or sending message and enter QQ by mobile phone.
对于青少年来说，更易造成近视，因为他们除了学习，还有人喜欢玩游戏，或用手机发短信或登录手机QQ；
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