In this paper, a new electric external swing-sliding-door system for the bus is given out. The principle and characteristic are also described.

本文提出一种新型的大客车电动外摆滑动式车门装置，并介绍其工作原理及特点。

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Lazio's campaign swing -- aboard his bus, the "Mainstream Express" -- entered its fourth day with scheduled stops in Syracuse and Buffalo.

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It is hoping that Ryan's unveiling will get a lot of positive coverage as it couples the announcement with a bus tour of swing states through Tuesday.

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But Bush also likes to relax, as he told a Webster Elementary School student Daniel Hannah-Dubois of Manchester, one of two students who interviewed him on LaBombard's bus during a campaign swing last month.

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