我胡乱给女性杂志写点东西，维持我们的生计。I supported us by writing bilge for women's magazines.现在的生活水平几乎快要无法维持生计。The standard of living today is on the edge of subsistence.大型工厂正试图通过削减成本以维持生存。The big factories are trying to stay alive b...
就制图的目的来说,所以需记录的高程是高出大地水准面 ( 海平面 ) 的高程.For cartographical purposes heights are necessarily recorded above the geoid ( sea - level ).较常见的是根据制图的比例来划分.More commonly the separation is based on the scale of the mapping.丁字尺 是工程...