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 ...

dirts的音标：...

n.泥土( dirt的名词复数 )，污垢，下流想法，恶言...