There are some advantages and disadvantages in using mobile phones at school.
带手机上学有优点也有缺点。
But take phone school also has a lot of problems existing in the mobile phone use, class teaching, using mobile phones and interference when chatting, text messaging and costly.
但是带手机上学存在的问题也有很多，上课时使用手机干扰教学，而且用手机聊天、发短信时也费钱。
An increasing number of middle school students in China are using mobile phones.
据调查，在中国越来越多的中学生开始拥有手机。
An increasing number of middle school students in China are using mobile phones.
据调查，在中国越来越多的中学生开始拥有手机。
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