线痕

例句：

1. 1. The old book had a faint line on the cover.
   那本旧书封面上有一道淡淡的痕迹。
2. 2. The car's paint was scratched by the sharp edge of the stone.
   汽车的漆被石头尖锐的边缘刮花了。
3. 3. The knife made a deep line in the paper as it cut through it.
   这把刀切过纸张时留下了一道深深的痕迹。