be in bed with
US /bi ɪn bɛd wɪð/
UK /bi ɪn bɛd wɪð/

1.
和...有染, 和...同居
to be having a sexual relationship with someone
:
•
Rumor has it that he's in bed with his secretary.
有傳言說他和秘書有染。
•
They've been in bed with each other for months.
他們已經同居好幾個月了。
2.
與...勾結, 與...暗中合作
to be closely involved or secretly cooperating with someone, especially in a dishonest or unethical way
:
•
The politician was accused of being in bed with big corporations.
這位政客被指控與大公司勾結。
•
Many believe the regulatory body is in bed with the industry it's supposed to oversee.
許多人認為監管機構與其應該監督的行業勾結。