路ろ線せんに沿そってMeanings1expressionalong the route; along the lineFixed expression used to describe movement or location following a physical route, such as a road, railway, or bus line.バスは路ろ線せんに沿そって走はしっている。The bus runs along the route.路ろ線せんに沿そって桜さくらが植うえられている。Cherry trees are planted along the line.