You need to find friends in whom you can trust and once they have proved themselves beyond all possible doubt you will be prepared to give them your all.

你需要找到朋友，对他们，你可以相信，一旦他们已经证明自己超越了一切可能的怀疑，你会愿意让他们你的一切。

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No one was willing to abandon a treaty when cheating could not be proved beyond a doubt.

CENTERFORSECURITYPOLICY: Center for Security Policy | A New Skepticism on Arms Control, By James T. HackettThe Washington Times, 18 October 1999

She was told the judge felt that on the basis of that evidence, it could not be proved beyond reasonable doubt that her memories were real.

BBC: 'Memories' of historic abuse leading to justice errors

Last year the Director of Public Prosecutions ruled out manslaughter charges, saying it could not be proved beyond reasonable doubt that Mr Tomlinson's death was caused by Pc Harwood pushing him to the ground.

BBC: UK police service 'transparent', says Sir Hugh Orde