Definition
To be in a situation where one is unable to provide evidence or justification for their claims or actions.
无法证明
Without any written agreement, they don't have a leg to stand on in the legal case.
没有任何书面协议，他们在法律案件中根本站不住脚。
He tried to argue his case, but with no evidence to back it up, he didn't have a leg to stand on.
他试图为自己的案子辩护，但没有证据支持，他根本站不住脚。
If they don't have records proving they made the payment, they don't have a leg to stand on in the dispute.
如果他们没有记录证明他们已经付款，他们在争议中根本站不住脚。