He couldn't solve the problem because he started out on the wrong track.
他不可能解决这个问题，因为一开始他的思路就错了。
你的思路错了。
At last I felt convinced that I was again on the wrong track.
我最后确信自己考虑问题的思路又错了。
That's one approach to the problem, I suppose, but I think you're on the wrong track.
我想这可能是解决问题的一种方法，但我觉得你的思考方向不对头。
That's one approach to the problem, I suppose, but I think you're on the wrong track.
我想这可能是解决问题的一种方法，但我觉得你的思考方向不对头。
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