室外地面 meaning in English

site-ground

The condensed water from air - conditioning equipment installed in buildings along the streets including public passageways in neighborhoods , lanes and alleys shall not be discharged onto the outside walls of the buildings or the ground outside
沿道路两侧（包括街坊、里弄内的公共通道两侧）建筑物安装空调设备的，禁止将空调设备的冷凝水排放到建筑物的外墙面和室外地面上。
In case of the real limitations given by the objective circumstances where the requirement of 2 . 5 meters in height can by no means be met , the height of installation may be appropriately lowered with the examination and approval of the district / county environmental protection departments in the locality , but the minimum height from the ground outside to the bottom of the racks shall be no less than 1 . 9 meters
确因客观条件所限，无法达到规定高度的，经所在地的区、县环境保护部门审批同意，可以适当降低安装高度，但空调设备托架底端距室外地面的最低高度不得小于1 9米。