noun 下载 🔗分享 底土，心土 The layer of earth that is below the topsoil. Examples : "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。 geology environment agriculture 与AI对话词汇游戏阅读练习
verb 下载 🔗分享 深耕，翻耕底土。 To turn up the subsoil of. Examples : "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。 agriculture geology environment 与AI对话词汇游戏阅读练习
