To their great disappointment, the scientists found that the solution to the problem they had been attempting at all these ten years turned out to be a blind alley.
使科学家们十分失望的是,十年来他们一直试图寻找解决那个问题的方法竟不奏效。
He has been trying to solve his money problem, but he is in a blind alley.
他一直尝试解决他金钱上的问题,但走进了死胡同。
He thought that the problem was one of thawing and that it might be a blind alley.
他认为这是一个融化问题,可能是一个死胡同。
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