/əˈgreʃn ||; əˈgrɛʃən/noun [U]:
1 angry feelings or behaviour that make you want to attack other people 敌意；敌对行为: People often react to this kind of situation with fear or aggression. 人们对这种处境的反应往往是恐惧或敌视。
2 the act of starting a fight or war without reasonable cause 侵略；挑衅