1. Films, videos, CDs and CD-ROMs are just some of the bewildering amount of information they will have.
    电影、录像、光盘和光盘驱动器只是能为他们提供令人眼花缭乱的大量信息的几种手段 。

2. For example, the amount of water on Earth is limited; this water is cleaned through natural processes.
    比如说，地球上的水量是有限的，这些水通过自然作用得到净化。