collude with; enter into collusion with;collaborate with;gang up with …和…战略～很紧。There is close strategic collusion between…and…/既～又争夺both collude and contend with each other/～盗窃犯倒卖汽车traffic in automobiles hand in glove with burglars/…和…之间相互～与利用的关系…and… at once collude with and make use of each other