have someone's blood on your hands
US /hæv ˈsʌm.wʌnz blʌd ɑn jʊər hændz/
UK /hæv ˈsʌm.wʌnz blʌd ɑn jʊər hændz/

1.
手上沾有某人的血, 对某人的死负责
to be responsible for someone's death, especially due to negligence or direct action
:
•
If the company doesn't fix these safety issues, they'll have someone's blood on their hands.
如果公司不解决这些安全问题,他们将要为某人的死负责。
•
The dictator had the blood of thousands on his hands.
这位独裁者手上沾满了成千上万人的鲜血。