noun🔗Share底土，心土 The layer of earth that is below the topsoil."The construction crew had to dig deep to reach the subsoil before laying the foundation for the new house. "为了给新房子打地基，施工队必须深挖，直到挖到底土层。geologyenvironmentagricultureChat with AIVocabulary GamePractice Reading
verb🔗Share深耕，翻耕底土。 To turn up the subsoil of."The farmer decided to subsoil his field to improve drainage and bring nutrients to the surface. "为了改善排水并把养分带到地表，农夫决定深耕他的田地。agriculturegeologyenvironmentChat with AIVocabulary GamePractice Reading
