为选择移动电话

Selecting a mobile phone for personal use is no easy task because technology is changing so rapidly.───选择一部供个人使用的手机不是件简单的事情，因为科技改变如此的迅速。

Selecting a mobile phone for personal use is no easy task because technology is changing so rapidly.───要挑选一部个人使用的移动电话绝不容易，因为技术变化得太快了。

Selecting a mobile phone for personal use is not an easy task because technology is developing so rapidly.───选择一部个人用的手机不是一件容易的事，因为技术发展太快了。