n.开垦；收复；再利用；矫正
The main cause of soil erosion is deforestation for farmland reclamation and cultivation on steep slopes. 水土流失的主要原因是毁林开垦，陡坡种植。
Reclamation of hillsides with a slope of over 25 degrees for cultivation of crops shall be prohibited. 禁止在二十五度以上陡坡地开垦种植农作物。
