One day, mentally exhausted, I wrote down all the reasons why this problem could not be solved.

一天，我心力交瘁，写下了问题未被解决的所有原因。

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But he added that such a complex problem could not be solved at one meeting.

但同时他也表示，如此复杂的一个问题不可能仅通过一次会议就能解决。

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It is thought that these problems could not be solved in a short run owing to the formation of these factors.

作者认为，由于这些因素的形成并非一朝一夕，因此问题的解决不可能一蹴而就。

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Fisheries Minister Eliot Morley admitted that the problem could not be solved by the UK alone.

BBC: Dolphins plan dismissed

But he added that such a complex problem could not be solved at one meeting.

ECONOMIST: Illegal migration to Italy

Iranian President Mahmoud Ahmadinejad said on Monday that Syria's problems could not be solved by military means and called for "national understanding and free elections".

BBC: Middle East