In case of urgency, call the police.

一旦发生紧急情况，打电话给警察。

《新英汉大辞典》

The Executive Committee can call for a meeting in case of urgency, postponement of meetings or change of meeting dates.

执委会可就紧急事务、会议延期或调整会议日期而召开会议。

youdao

We must make up our minds at once in view of the urgency of the case.

鉴于情况紧急，我们必须立刻下定决心。

youdao

These kinds of cases can drag on for years, so Nokia is signaling some kind of urgency by going to the expeditious courts of Madison to get this case moving.

FORBES: Nokia Vs. Apple in the Rocket Docket

As with the case of importing information through frontline employees, you can systematize the use of video as an urgency-raising mechanism.

FORBES: Four Ways to Increase the Urgency Needed for Change -- Part I

And we expect that to be the case if Congress decides that it shares the sense of urgency that the American people have.

WHITEHOUSE: Press Briefing