dull roll

例句：

1. 1. The old man was so dull that he couldn't even understand the joke.
   那个老人太迟钝了，甚至听不懂笑话。
2. 2. The slow-rolling news broke the tension between the two countries.
   缓慢报道打破了两国之间的紧张关系。
3. 3. The dull roll of the waves against the shore was soothing to the ear.
   海浪轻拍岸边的声音令人心旷神怡。