1、The salinity of this coastal region is too high for most crops to thrive.
这个沿海地区的盐度对大多数作物来说太高，无法生长茁壮。

2、The salinity of the ocean varies depending on factors such as evaporation and freshwater input from rivers.
海洋的盐度因蒸发和河流的淡水输入等因素而有所不同。