n.開墾；收復；再利用；矯正
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毀林開墾，陡坡種植。
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開墾種植農(nóng)作物。
