1·More than 97 percent of Earth's water is in the oceans, but that vast reservoir is undrinkable unless the salt is removed.
地球上超过97%的水是海水，在盐分去除之前是不能饮用的。
2·They found the water was poisonous and undrinkable for people or animals.
他们发现，水是有毒的和不能饮用的人或动物。
3·Chemical companies in order to save costs, will not be processed into the river sewage, and makes the water undrinkable.
化工企业为了节省成本，不会入河污水处理，使水不能饮用的。