put your head on the block
US /pʊt jʊər hɛd ɑn ðə blɑk/
UK /pʊt jʊər hɛd ɑn ðə blɑk/

1.
冒风险, 承担责任
to risk your reputation or position by supporting something or someone, especially when there is a chance of failure or criticism
:
•
I'm willing to put my head on the block for this project because I truly believe in it.
我愿意为这个项目冒风险,因为我真的相信它。
•
He put his head on the block for his team, defending their controversial decision.
他为他的团队冒了风险,为他们有争议的决定辩护。