If you happen to hear a humming sound and see a flash of color whiz by . . . who knows 如果你偶然听到嗡鸣声，又瞥见一道缤纷色彩掠过…谁知道呢？
2.
The traditional example is a web server ; it s the kind of thing the media likes to portray as a giant liquid - cooled machine with lights and an ominous humming sound ; but which you and i know is actually just a few megabytes of disk space and a nearly imperceptible load on the system 传统的一个示例是web服务器；媒体可能会把这种事物描绘成一台庞大的液体冷却的机器，它闪着光芒，机声隆隆；但您我都知道，它实际上只占用几兆字节的磁盘空间和对系统产生几乎无法察觉的负载。
