very important and needing attention immediately

He's got to sign that paper - will you tell him it's urgent? 他务必要签署那份文件——请你告诉他这很紧急，好吗?

The most urgent thing in a fire is to make sure everyone is out of the building. 失火时最紧要的事是确保所有人都撤离大楼。

Many people are in urgent need of food and water. 很多人亟需食物和水。

(especially of a person's actions) repeated and determined in trying to get or do something

His urgent pleas of innocence made no difference to the judge's decision. 他一再申辩自己无罪，却无法改变法官的判决。