Mobile phone, as a more and more important communication tool in modern life has become indispensible in people’s work and life. Will your mobile phone be available 24 hours? What is the reason for keeping it on, for work or for him/her? Will the mobile phone affect your sleep?

手机作为现代生活一种越来越重要的联络通讯工具，使得人们的工作和生活越来越离不开它。

你的手机是24小时开着吗？你不关机是为了什么？是工作需要还是为了他（她）？手机24小时开着，会影响你的睡眠吗？