There's probably a dissertation there somewhere if you can find an answer.
说不定有那么一些关于这个的论文，你们可以从中找到答案。
There is an obvious answer and a not so obvious one.
答案既显而易见，又不是那么一目了然。
There is no certain connection between a paper and an answer, so is also between a exam paper and a score.
试卷和答案没有必然的联系，和分数也没有必然的联系。
There is no certain connection between a paper and an answer, so is also between a exam paper and a score.
试卷和答案没有必然的联系，和分数也没有必然的联系。
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