水土保的英文：
soil and water conservation
n. 土地，土壤；国土，领土
v.（被）弄脏
He died on British soil.
他死于英国。
The soil is difficult to work with.
这块污迹很难处理。
The fertilization of soil is a subject to the farmers.
肥料的施用对农民来说是一门学问。
n. 水；雨水；海水；海域
v. 给…浇水；供以水；加水；流泪；流口水
In smooth water
进入顺境
Is the water on or off?
自来水龙头开着还是关着？
Water Skiing is a surface water sport.
滑水是一项水面运动。
n. 保存，保持；保护
conserve momentum
使动量守恒
Conservation is of the utmost importance.
保护自然资源至关重要。
We are not creatures of the Conservative government.
我们不是保守派政府的傀儡。