(as) dull as ditch water

• 枯燥无味；毫无趣味

(as) dull as ditch water的用法和样例：

例句

1. He was tired of the dull and dry life.
   枯燥无味的生活使他感到厌烦。
2. I find his early novels as dry as dust.
   我发现他早期的小说枯燥无味。