dirts造句

There are some dirts there.
那儿有一些污垢.

A defect caused by worn gears or dirts gathered on gears of a press cylinder.
是印刷机上的圆筒齿轮因磨蚀或污物堆积所引致的故障.

Paper samples must be free of fingerprints, dirts, wrinkles, and stored in a clean plastic bag.
提交之纸张样本必须无手指印、污垢及皱纹, 并保存在清洁的塑胶袋内.