dull

He felt a dull pain in his lower back.

他感到下背部一阵钝痛。

After the workout, she had a dull ache in her muscles.

锻炼后，她的肌肉隐隐作痛。

It's hard to cut a tomato with a dull knife.

用钝刀切西红柿很困难。

It was a dull, rainy day with no sunshine at all.

那是阴沉多雨的一天，完全没有阳光。

The paint on the wall had become a dull gray over time.

墙上的油漆随着时间的推移变成了暗淡的灰色。

Lack of sleep can make your mind feel dull and slow.

睡眠不足会让你的头脑感到迟钝和迟缓。

The lecture was as dull as dishwater; I almost fell asleep.

那个讲座无聊透顶，我差点睡着了。

I found the lecture dull and uninteresting.

我觉得这个讲座乏味无趣。