The problem here is one I have solved in several other ways already.
我已经用几种其它的方法解决了这里的问题。
My opinion is that we have already perfectly solved this problem.
我的意见是我们已经圆满解决这个问题。
A less difficult problem would have already been solved.
要是问题容易些早就解决了。
They would already have solved the problem, in effect, by acting as a co-creator.
他们若是能把自己作为一个协同发现者的角色的话，将曾经办理这个问题（？ 甚么问题？） 。
They would already have solved the problem, in effect, by acting as a co-creator.
他们若是能把自己作为一个协同发现者的角色的话，将曾经办理这个问题（？ 甚么问题？） 。
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