不及物动词

1. 干涉;干预;介入
If you intervene in a situation, you become involved in it and try to change it.

2. 插话;打岔
If you intervene, you interrupt a conversation in order to add something to it.

3. 干扰;阻挠;打扰
If an event intervenes, it happens suddenly in a way that stops, delays, or prevents something from happening.

1. occur between other event or between certain points of time

e.g. the war intervened between the birth of her two children

2. get involved, so as to alter or hinder an action, or through force or threat of force

e.g. Why did the U.S. not intervene earlier in WW II?

Synonym: step ininterfereinterpose

3. be placed or located between other things or extend between spaces and events

e.g. This interludes intervenes between the two movements
Eight days intervened