Digital Elevation Model (DEM) records topographic fluctuation changes and in which it contains various topographic construct information including valley lines and ridge lines.

数字高程模型(dem)是记录地形起伏变化的资料，当中蕴含着各种地形地貌的结构信息，其中包括山谷线和山脊线。

youdao

Then the king of Sodom, the king of Gomorrah, the king of Admah, the king of Zeboiim and the king of Bela (that is, Zoar) marched out and drew up their battle lines in the Valley of Siddim

于是所多玛王、蛾摩拉王、押玛王、洗扁王，和比拉王（比拉就是琐珥）都出来，在西订谷摆阵，与他们交战

youdao

And Asa went out to meet him, and they drew up their lines of battle in the Valley of Zephathah at Mareshah.

于是亚撒出去与他迎敌，就在玛利沙的洗法谷彼此摆阵。

youdao

Off in the distance you see a valley way below and lines of bluish gray mountains that seem to reach forever.

VOA: special.2009.07.20

This once fertile river valley is on the front lines of Senegal's fight against desertification.

VOA: standard.2010.04.01

The poems will be featured on posters at stations throughout the Valley Lines network.

BBC: Valley Lines poets make tracks

Mr Langman said the electrification announcement of the Swansea and Valley lines was made back at the beginning of last summer.

BBC: Electrification of Swansea to London trains 'by 2018'

An M4 relief road south of Newport, electrification of valley lines trains - two schemes Prof Morgan believes would benefit Wales' economy.

BBC: Wales