sharp
单词辨析：
用于描述人们的想法、感觉，通常指能够注意到被观察物体的细微差异的。
He gave an acute analysis of regional politics.
他对区域政治作了敏锐的分析。
Wild animals have an acute sense of smell.
野生动物有灵敏的嗅觉。
用于描述思想感情和感官，强调敏锐的、聪慧的。
She has a keen eye/mind.
她目光/思想敏锐。
His keen ear caught the trace of an accent.
他敏锐的耳朵听出了些许口音。
既可指头脑灵活的，又可指观察入微的。
Birds have sharp eyes and dogs have sharp noses.
鸟有敏锐的眼睛，而狗有灵敏的鼻子。
He is seventy years old, but his mind is still sharp.
他虽然70岁了，但头脑还很灵活。
相关例句：
His nose was thin and sharp.
他的鼻子又细又尖。
Vincent French is a real estate broker at the sharp end of a tough and exacting business
文森特·弗伦奇在房地产这个艰难行业做了最吃苦受累的不动产经纪人。
He's old but his mind is still sharp.
他虽上了年纪，思维还很敏捷。
'Don't contradict your mother,' was Charles's sharp reprimand
“不要和你妈妈顶嘴，”查尔斯严厉地斥责道。
Gates is known to be a superb analyst with a sharp eye and an excellent memory.
盖茨是公认的杰出分析家，他目光敏锐且记忆力超群。
He is very sharp, a quick thinker and swift with repartee
他非常机敏，反应很快，并且能说会道。