water是不可数名词。
watern.水；大片的水；水域；(尤指)江，河；v.给…浇水；灌溉
Tests have shown high levels of pollutants in the water.
测试显示水中污染物质的含量很高。
I was determined to go, come hell or high water.
我决心要去，无论有什么困难。
Water supplies to the house are at low pressure.
这房子的供水水压低。
水利万物而不争,
而万物莫能与之争。
