smudges

例句：

1. 1. The old painting had been smudged by years of dust.
   这幅旧画被岁月的尘埃弄脏了。
2. 2.The smoke from the fire was smudged on the window.
   火苗冒出的烟在窗户上留下了痕迹。
3. 3. The children were smudged with dirt as they played in the garden.
   孩子们在花园里玩耍时弄得满身是泥。