noun🔗Share古土壤，化石土壤 A layer of fossil soil buried beneath other sediments or deposits."While digging the foundation for the new school building, construction workers discovered paleosols, ancient soils that provided clues about the area's past environment before the current topsoil existed. "在为新建学校大楼挖掘地基时，工人们发现了古土壤（化石土壤），这些古老的土壤为我们提供了关于该地区过去环境的线索，让我们了解在现有表层土壤形成之前的景象。geologyarchaeologyenvironmentnatureChat with AIVocabulary GamePractice Reading
