noun 下载 🔗分享 底层地板， 基层地板 The floor structure supporting and underlying the visible flooring or other finishing surface such as a carpet Examples : "The plumber had to cut a hole in the kitchen floor to fix the pipes, revealing the plywood subfloor underneath. " 水管工不得不切开厨房的地板来修理水管，露出了下面的胶合板基层地板 (jīcéng dìbǎn)。 building architecture material structure 与AI对话词汇游戏阅读练习
