If no drainage system exists, the water table rises, bringing dissolved salts to the surface.
如果没有排水系统，地下水位就会上升，把溶解的盐带到地表。
2
Some salt substitutes or light salts contain a mixture of table salt and other compounds.
一些增咸剂和低盐产品是食盐和其它化合物的混合物。
3
For example, cheap forms of irrigation have depleted the water table in many farm areas of India, while at the same time adding near-toxic levels of salts from fertilizers to the soil.