He worked hard to be qualified for the job.

他努力工作以胜任这项工作。

He or she must be qualified for it, pure enough.

他或她必须是合格的它，纯粹不够的。

I hope I know the knowledge can be qualified for the work.

我希望我所知道的知识能够胜任这份工作。

Even default namespaces have to be qualified with a prefix.

即使是默认名称空间也必须用一个前缀进行限定。

We will be qualified for the price and the quality of social return.

我们将以优惠的价格和合格的质量回报社会。