dull

blunted in responsiveness or sensibility.

反应迟钝的，感觉迟钝的。

He was slow (quick) to react.

他反应迟钝(灵敏)。

keen [dull] sense of smell

敏锐[迟钝]的嗅觉

psychomotor retardation

心理动作迟钝 心理动作迟钝

Not blunted by a guard on the tip, as a sword or fencing foil.

剑或钝头剑前端未用护手盘弄钝的

Desensitivity Mechanism of Composite Desensitizer to THL Explosive

复合钝感剂对梯黑铝炸药的钝感机理

She told him the knives weren't sharp.

她告诉他，这些刀都太钝。

A blunt knife draws no blood.

钝刀子割肉割不出血来。

He turned the edge of the knife.

他使刀口卷刃[变钝]。

the knife was too dull to be of any use.

这把刀钝了，毫无用处。

was considered slow.

被认为是一个迟钝的人。

The blunt knife is useless.

这把钝刀毫无用处。

brace countersink

钝角菊花形尖头板钻

insensitive to the needs of the patients.

对病人的需要感觉迟钝。

The drug blunted his senses.

药使得他的感觉迟钝了。

cause(sb)to feel dull,bored,etc

使（某人）感觉迟钝、厌烦等

make numb or insensitive.

使麻木迟钝或没有感觉。

You aren't very alert today.

你今天反应有点迟钝。