满是浮渣的

例句：

1. 1.The water was foul after the storm.
   暴风雨过后，水变得很脏。
2. 2. The fisherman found a foul smell in the river.
   渔民在河里发现了一股恶臭。
3. 3. The factory has been fouling the air with its fumes.
   工厂的废气污染了空气。