“水上的”的英语？

油有浮在水上的特性.Oil has the property of floating on water.然而,五大湖流域的州地在水上的特殊问题仍继续存在.Great Lakes states continue to have their own unique water problems, however.油是漂浮在水上的,这样,潜艇就有了浮力.Oil floats on water and so you get the buoyanc...