Other friends take walks and "forget" their cellphones at home.

出自-2012年12月阅读原文

But do you know that every year a lot of useless computers and cellphones will ruin the soil?

2017年高考英语北京卷 听力 原文

In the past two decades, however, continued connection with and dependence on family,thanks to cellphones,email and social media, have increased significantly.

2016年高考英语北京卷 阅读理解 阅读D 原文