一层烟雾低悬在污浊的空气中。A layer of smoke hung low in the stale air.大城市的空气往往是污浊的.The air of a big city is often impure.他发现那污浊的水开始往下退了.He saw that the dirty water had begun to recede....

“污浊的”的英语可以翻译为：dirty，dreggy，filthy，muddy，stagnant ...