“横线”造句

在这几页上同时画上横线和竖线,以便制作图表.
Line the pages for the graph both horizontally and vertically.

图上部的横线段表示陆地.
The bars across the top of the figures show the land area.

横线就在金属表面划线表示.
The lines are supposed to scratched the surface the metal.