网页设计制作之改进超级链接效果(4)_XHTML教程

It's quite common to find computers putting out this kind of information to set user's expectations when linking to a file:
当链接到一个文件时，我们通常会发现超链接上包含一段关于文件大小尺寸的描述，这有助于用户决定自己的意愿（即：是否点击该文件链接）。

如：PDF (46,764 bytes)

Thinking about the user's goals, what they need is to know roughly how long the download will take: will it be a few seconds, or minutes? That's generally as accurate as it needs to be.

好好思考一下用户的目标是什么，通常情况下，他们需要知道下载需要花去多长时间：是几秒钟，还是几分钟？因此，我们应该对其作出尽可能精准的描述。

What should it be?
应该怎样描述上述的文件尺寸呢？

There's no benefit at all in showing more than two significant figures in file sizes. Above should be 47KB. Also, only ever use kilobytes or megabytes for file sizes online. (Good, useful file sizes to 2 significant figures run: 4.7KB, 47KB, 470KB, 4.7MB etc.)

对文件尺寸的描述最好不要超过两位有效数字。上述文件尺寸应该写成47KB。因此，网络上应尽可能地使用千字节（kb）或兆字节（mb）对文件进行描述。（我们推荐的2位数字描述法如下：4.7KB, 47KB, 470KB, 4.7MB等等）

Formatting hyperlinks
对超链接定义格式

If we have to differentiate text hyperlinks from other text, should this be done with colour or formatting such as underlining/emboldening?

假如我们需要在一个文本中区分不同的文字链接，我们应该对超链接的部分使用不同于普通文本的颜色，或者对超链的文字加上下划线，或者加粗。

The de facto convention has been that hyperlinks are rendered in blue with underlines, that they turn red when clicked, and that visited links are purple.