跳舞的小蜗牛 2021-06-05 06:38 开发者_运维技巧 如果是高速上的话我就知道。 高速上一般有3条车道,左边第一条就是超车道,中间是行车道,右边是紧急行车道(或紧急停车道)。
This seems like an elementary question, but after a lot of searching around I can\'t seem to find a straightforward explanation: