dull

无趣的、乏味的、沉闷的

The lecture was so dull that half the students fell asleep.

那场演讲无聊到一半的学生都睡著了。

暗淡的、阴暗的、不鲜艳的

The walls were painted a dull gray that absorbed all the light.

墙面漆成暗淡的灰色，把光线全吸走了。

钝的、不锋利的

A dull knife is more dangerous than a sharp one.

钝的刀子比利的刀子更危险。

隐隐的、闷闷的多指疼痛

I felt a dull ache in my lower back all morning.

整个早上我下背都隐隐作痛。

低沉的、沉闷的多指声音

The box hit the floor with a dull thud.

箱子落地时发出低沉的一声闷响。

迟钝的、愚笨的

He is not dull at all, just very shy in class.

他一点都不笨，只是上课时很害羞。

萧条的、冷清的指市场、生意

Business stays dull until the tourists come back in summer.

要等夏天观光客回来，生意才不会那么冷清。

减轻、缓和、麻痺

The medication dulled the pain enough for her to sleep.

药物减轻了她的疼痛，让她能睡著。

使失去光泽、变暗淡

Years of sunlight had dulled the paint on the roof.

多年的日晒让屋顶的漆失去了光泽。

使变钝、磨钝

Cutting cardboard will dull the blade very quickly.

拿来裁纸板会让刀片很快变钝。