偶然碰到高中隔壁班的同学，居然他是这班列车的实习列车长，真是有趣。
I met my Senior High School mate by chance, he is in internship as the head of the train, quite funny.
最后，对无中墙连拱隧道的施工方案进行了比选，即对交叉中隔壁工法的两种施工工序进行比较分析。
Finally, the construction plans of the double-arch tunnel without middle-wall are compared, that is, two construction process engineering methods of CRD construction method are compared.
最后，对无中墙连拱隧道的施工方案进行了比选，即对交叉中隔壁工法的两种施工工序进行比较分析。
Finally, the construction plans of the double-arch tunnel without middle-wall are compared, that is, two construction process engineering methods of CRD construction method are compared.
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