ground level

1. N-UNCOUNT 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. 底層[oft prep N]

The hotel is set on three floors. There's a bar and cafe at ground level. 旅館有三層樓。底層有個酒吧和咖啡厛。

The remaining section of woodland is cut down to ground level. 林地的賸餘部分被砍光了。