do something while you can

Otherwise, if while dealing with something you think everything you can do after (tomorrow, the rest of week, next month, the rest of your life...), most likely you will get bored and disappointed.

否则，如果你在做一件事情的时候还在想着之后要做的其他事情(比如明天、本周、下个月、下半辈子的事情)，你很有可能会厌倦手头工作，心情沮丧。

The IM client also supports other popular services like AOL and Yahoo, and can run in the background while you do something else, unlike the iPhone.

即时消息的客户端同样支持其他流行的诸如AOL和Yahoo的服务，而且当你做其他事情的时候可以在后台运行，不象iPhone。

Of course, you can run loops backward instead of forward, or increment the loop counter by something other than 1, or even eliminate the loop counter completely as you do in a while statement.

当然，也可以反向而不是正向运行循环，或者使用1之外的循环计数器增量，甚至像while语句那样完全取消循环计数器。