Your question is beyond the extent of my knowledge.

你的问题已经超出了我的知识范围.

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I can't answer your question about photography; it's not in my domain.

我无法回答你有关摄影技术的问题, 它不属于我的知识范围.

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When I wanted to do something, I had to review all possibilities within my limited scope.

当我想做某事时, 我不得不在我有限的知识范围内去思考所有的可能性.

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