泥土在使用前须经过很好的改良，尤其是像粘土类难耕的土地。

The soil should be amended well, especially with heavy soils like clay.

youdao

泥土在使用前须经过很好的改良，尤其是像粘土类难耕的土地。

The soil should be amended well, especially with heavy soils like clay.

youdao