mass public transportation 大量公共运输
In terms of efficiency and cleanness, buses, trains and other forms of public or mass transportation are superior to the private automobile.
在效率和清洁方面，公共汽车、火车和其他形式的公共或大众交通工具优于私家车。
Mass transportation system has already been a very important public traffic facility in the developed countries.
轨道交通在发达国家已经成为非常重要的公共交通工具。
They asked about the residents' level of physical activity, body mass and use of public transportation before and after the light rail.
研究者们询问了该地居民的活动量、体重以及在轻轨建成前和建成后使用公共交通的情况。
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