She's been ailing for some time.

她身体不适已有一段时间了。

He has settled here for a long span of time.

他已经在这儿定居很长一段时间了。

I need some time to mull it over before making a decision.

在作出决定之前我需要一些时间来认真琢磨一下。

After a serious argument, it can take some time for the wounds to heal.

激烈争吵之后的感情创伤需要一些时间才能愈合。

This will be a problem for some time to come.

这将是未来一段时期里的一个问题。

Digital television has been around for some time now.

数字电视已经面市一段时间了。