Soil erosion is an important topic in the planning of soil and water conservation in the urban area.

土壤侵蚀等级的确定是城市水土保持规划中的重要问题。

youdao

Soil erosion is an important topic in the planning of soil and water conservation in the urban area.

土壤侵蚀等级的确定是城市水土保持规划中的重要问题。

youdao