Regulators found that the two shipping firms colluded to keep freight rates artificially high.

主管機關發現這兩家航運公司串通，人為維持高運費。

The auditor discovered that several managers had colluded to hide losses from shareholders.

稽核人員發現幾位經理曾共謀向股東隱瞞虧損。

Bidders who collude on hiring contracts will be banned from future tenders, the memo said.

備忘錄指出，在招聘外包合約上串通的投標廠商將被禁止參與日後的標案。