As all we known, the cell phone has become a indispensable part in our life.

众所周知，手机已经变成了人们生活中不可缺少的一部分。

youdao

As all we known, the cell phone has become a indispensable part in our life.

众所周知，手机已经变成了人们生活中不可缺少的一部分。

youdao