If your car doesn't start, you would begin a train of thought, based on logic, to find the source of the problem.

倘若你的车无法启动了，你就会开始一连串的逻辑思维过程，以便找到问题的根源。

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At last, the author expounds the basic train of thought of the writing thesis and logic structure, and theory tool and research approach that the thesis used.

最后，阐明写作论文的基本思路和逻辑结构，以及论文使用的理论工具和研究方法。

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