sharpen

1. (感觉、理解)加强;(使)加深;(技巧)提高;(使)改善
If your senses, understanding, or skills sharpen or are sharpened, you become better at noticing things, thinking, or doing something.

e.g. Her gaze sharpened, as if she had seen something unusual...
她眼睛一亮，仿佛看见了什么不寻常的事情。
e.g. You can sharpen your skills with rehearsal.
排练可以让技巧更加纯熟。

2. 使变得锋利;削尖;磨快
If you sharpen an object, you make its edge very thin or you make its end pointed.

e.g. He started to sharpen his knife.
他开始磨刀。
e.g. ...sharpened pencils.
削尖的铅笔

3. (分歧、差异等)加剧;(使)加深;(使)加重
If disagreements or differences between people sharpen, or if they are sharpened, they become bigger or more important.

e.g. With urbanisation the antagonism between rich and poor sharpened...
伴随着城市化的推进，贫富间的对立情绪也加剧了。
e.g. The case of Harris has sharpened the debate over capital punishment.
哈里斯案激化了人们对死刑的争论。

相关词组：sharpen up

1. 锐化滤镜：这一脚本先使用了去斑点滤镜(Despeckle),然后又使用了锐化滤镜(Sharpen). 虽然前一个滤镜能够去除大量的颗粒,但却会同时将图像变模糊. 因此,还需要再使用锐化滤镜. 这样,图像清晰如初,但颗粒现象却减轻了.

2. (锐利化)：要后制的话也可以~我是用photoshop有一个滤镜功能叫做锐利化(Sharpen)要后制的话也可以~我是用photoshop有一个滤镜功能叫做锐利化(Sharpen)

3. 銳利度：影像调整项有饱和度( Saturation), 色调 (Tone), 锐利度( Sharpen) 供调整,多了饱和度的项目.