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》

Impart urgency and convenience: in most instances, the sole objective of the cold call is to get an appointment.

告知急迫性和便利性：大部分情况下，冷不防打电话的唯一目的就是预约见面。

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Oppenheimer feels more urgency than ever to deal with climate change, but he says that in the end, setting acceptable limits for carbon dioxide is a judgment call.

奥本海默感到应对气候变化比以往任何时候都更加紧迫，但他说，制定可接受的二氧化碳水平最终是一种主观判断。

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We call on the government to improve the population count as a matter of urgency.

BBC: MPs attack migrant count methods