接着他又仔细检查了每一个角落，又根据事实作出相应的判断，因而产生了许多重要线索，案情渐渐明晰。

Then he carefully checked every corner, in accordance with the judgement of the facts accordingly, thus producing a lot of important clues, the case gradually clear.

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大自然给予发明者许多重大线索，让他们知道如何使发明奏效。

Nature has given inventors big clues about how to make their inventions work.

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