the action of becoming intentionally involved in a difficult situation, in order to improve it or prevent it from getting worse

Half the people questioned said they were opposed to military intervention in the civil war. 半数被问到的人说他们反对对内战的军事干涉。

Repeated interventions on the currency markets failed to prevent the currency's value falling. 反复地干预货币市场并没有防止货币的贬值。

a meeting at which someone with a drug or alcohol problem is asked by family members, friends, or health workers to accept the fact that they have a problem and is encouraged to get treatment

A medical professional can advise family members of the most appropriate times to stage an alcohol intervention. 医疗专业人士可以给家庭成员提供指导，建议组织干预活动的最恰当时机。

an occasion when someone's friends or family speak to them about a problem or situation because the person's behaviour is unreasonable or harmful

humorous He's been playing that video game all day. I think it's time for an intervention. 他一整天都在玩电子游戏。我觉得是时候和他谈一下了。