The spatial extent of the assigned land refers to the closed space formed by the above-said boundary points posed by the vertical plane and the upper and lower elevationlevel.
出让宗地空间范围是以上述界址点所构成的垂直面和上、下界限高程平面封闭形成的空间范围。
2
We're probably at an elevation of about 13,000 feet above sea level.
我们很可能在海拔13000英尺的高度。
《柯林斯英汉双解大词典》
3
To measure the difference in elevation between poles, surveyors used an optical level—a telescope on a level base—placed halfway between the poles.