imperative

必要的、迫切的、势在必行的正式

It is imperative that we reduce waste in every department.

我们必须减少每个部门的浪费。

命令式的、威严的

She spoke in an imperative tone that no one dared question.

她以命令的语气说话，没人敢质疑。

祈使的、命令语气的语言学

In this sentence the verb appears in the imperative form.

在这个句子里，动词是以祈使形式出现。

当务之急、必要之事正式

Cutting carbon emissions is now a moral imperative.

减少碳排放如今是道德上的当务之急。

祈使句、祈使语气语言学

The teacher asked us to rewrite each request as an imperative.

老师要我们把每个请求改写成祈使句。