N-UNCOUNT
(尤指国家、组织间的)共谋，勾结，串通
Collusion is secret or illegal co-operation, especially between countries or organizations.
例句
He found no evidence of collusion between record companies and retailers...
他没发现唱片公司与零售商串通一气的证据。
Some stockbrokers, in collusion with bank officials, obtained large sums of money for speculation.
一些股票经纪人和银行职员串通一气，通过炒买炒卖赚了不少钱。