英语翻译Most rail technologies,including high-speed,freight,comm

英语翻译
Most rail technologies,including high-speed,freight,commuterregional,and metrosubway are considered to be “heavy rail”in comparison.A few systems such as people movers and personal rapid transit could be considered as even “lighter ”,at least in terms of how.many passengers are movedper vehicle and the speed at which they travel .Monorails are also considered to be a separate technology.Lightrail systems can handle steeper inclines than heavy rail ,and curves sharp enough to fit within street intersections.They are typically built in urban areas,providing frequent service with small,light trains or single cars.