black elevation的用法和样例：
例句
- Steel and other major components such as marking the centerline and elevation benchmarks should be complete.
钢柱等主要构件的中心线及标高基准点等标记应齐全。 - Some damaging earthquakes have been followed by no observable large-scale primary faulting but by substantial changes in the local ground elevation.
有些破坏性地震并没有伴随可见的大规模原生断裂，但局部地面却有很大的标高变化。
