troubled water的用法和樣例：
例句
- The choppy water looked very complicated but it was a very easy effect to create just using two colors and allowing some of the white of the paper to show through.
波濤洶湧的海水看起來非常複雜，但是其實很好畫，只要用兩種顏色再露出一些畫紙的白色就行了。 - It's good fishing in troubled waters.
混水好摸魚。 - Changing temperatures in the lake during the winter could have brought stagnant water to the surface, thus asphyxiating entire schools of fish.
冬季湖中溫度的變化將把底部混水帶到表層，這樣會導致整個魚群的窒息。
