isoline map

例句：

1. 1. The isoline map shows the elevation difference between different areas.
   等高线地图显示了不同地区之间的海拔差异。
2. 2. The isoline map helps us understand the topography of the area.
   等高线地图有助于我们了解该地区的地形。
3. 3. The isoline map was used to create a relief model of the mountain range.
   等高线地图被用来创建山脉的立体模型。