soiledadj.污染的动词soil的过去式和过去分词形式.soiln.土地；土壤；污物，粪便v.弄污Soil pathogens土壤病原菌soil poisoning土壤积毒,土壤中毒soil evolution土壤演变soil-bitumenn.沥青土Soil potassium土壤钾素soil nail wall土钉墙soil condition土壤情况soilless times无土时代soil inoculant土壤接种物soil mechanics土壤力学