公共汽车、有轨电车和火车构成市内和郊外四通八达的交通网。
There are buses, streetcars and trains to different parts of the city and to areas outside the city.
这种气缸排列通常用在头部空间很小的机动车上，如货车、公共汽车以及有轨电车上。
This arrangement is used where there is little headroom, as in trucks, buses, and rail cars.
有轨汽车、公共汽车、地铁在不同时期都是有效率的交通工具。
Trolley buss es buss es and subways are efficient transportation means at different stages of time.
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