acute
Acute & keen & penetrating
1. Acute
1.2强调感官的敏锐，也可以表示洞察力很强
1.3Eg:Dogs have an acute sensitive and well developed.
He is acute observer of the social scene.
2. Keen
2.1表示感官的敏锐，没有强调洞察力。
2.2Eg:The dogs have a keen sense of smell.
3. penetrating
3.1这个强调人的洞察力，可以明察秋毫。
3.2Eg:Penetrating green eyes.犀利的绿眼睛
Acute & intense &critical & sever
1. acute1.1- 程度比sever轻，veryacute=seve
1.2- Eg：
1.3- There is an acute shortage of water.
2. Sever:
2.1强调极限的伤害或不好
2.2-eg:
2.3a sever winter(=one during which the weather conditionsare extremely bad.)
3. intense-
3.1- 表示强烈的，极限的，但没有直接表示不好或者伤害
3.2- Eg:
3.3- The intense blue of her eyes3.4- 她深蓝色的眼睛
4. critical
4.1强调严重的，不稳定的，并且带有伤害的。
4.2eg:
4.3the fist 24 hours after theoperation I are most critical.