dirtn.污垢；泥土；灰尘dirtied your handsv.有损于(做可耻的事)dirt-cheap price极便宜的价格dirt-pocket trap沉泥井dirtied their handsv.有损于(做可耻的事)dirtiness resistance污垢热阻dirt discharge groove排污槽Dirt breed disease.肮脏易生病。dirt-removing power去污能力dirt excluding groove积后槽dirt-block function阻垢作用