N-UNCOUNT [oft preposition NOUN]地面（相对于高处或地下而言） If something is at ground level, it is at the same level as the ground, as opposed to being higher up or below the surface. 地面（相对于高处或地下而言）
The hotel is set on three floors. There's a bar and cafe at ground level.
这家饭店有3层，在一楼有间咖啡吧。
The remaining block of woodland is cut down to ground level.