v.

make sharp or sharper

"sharpen the knives"

make sharp or sharper

"We had to sharpen our arguments"

become sharp or sharper

"The debate sharpened"

put (an image) into focus

同義詞：focusfocalizefocalise

make (images or sounds) sharp or sharper

raise the pitch of (musical notes)

give a point to

同義詞：taperpoint

make (one's senses) more acute

"This drug will sharpen your vision"

同義詞：heighten

Motivation sharpens exogenous spatial attention
Positive feedback sharpens the anaphase switch.
Predation sharpens the adaptive peaks: survival trade-offs in sympatric sticklebacks
Activity sharpens the map during the regeneration of the retinotectal projection in goldfish
Less is more: expectation sharpens representations in the primary visual cortex
Activity sharpens the map during regeneration of the retinotectal projection in goldfish. Brain Res. 269, 29-39
Broad inhibition sharpens orientation selectivity by expanding input dynamic range in mouse simple cells.
Balanced inhibition underlies tuning and sharpens spike timing in auditory cortex.
GABAergic and glycinergic inhibition sharpens tuning for frequency modulations in the inferior colliculus of the big brown bat.
The midbrain creates and the thalamus sharpens echo-delay tuning for the cortical representation of target-distance information in t...