n. the inside lower horizontal surface (as of a room, hallway, tent, or other structure)
n. a structure consisting of a room or set of rooms at a single position along a vertical scale
n. a lower limit
n. the ground on which people and animals move about
n. 地板, 楼层, 底部, 底价
vt. 铺地板, 打倒
n. 地面, 地板, 基底
[计] 基底