urgency這個英語單詞的詞性是名詞，urgency的名詞含義為緊急，催促，緊急的事。

　　例句：

　　The rainy season is coming. It's a matter of great urgency to repair the drainage and irrigation equipment.

　　雨季就要到了，修理排灌設備是急如星火的任務。

　　He was boiling hot all over, his mind tense with a great sense of urgency.

　　他全身滾熱，心急如焚。

　　In case of urgency, call the police.

　　一旦發(fā)生緊急情況，打電話給警察。