那天当你帮助我的时候，我感到很难过，现在我决定告诉你真相，你这个朋友真是太好了！
That day when you helped me, I felt very sad and now I decide to tell you the truth, you are such a nice friend!
你能在业余时间帮助我们解决这个棘手的问题真是太好了，因为我们很难想到和你一样行之有效的办法。
It is kind of you to help us handle this tough problem in your spare time because it is very difficult for us to think of a means as feasible as yours.
你能在业余时间帮助我们解决这个棘手的问题真是太好了，因为我们很难想到和你一样行之有效的办法。
It is kind of you to help us handle this tough problem in your spare time because it is very difficult for us to think of a means as feasible as yours.
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