n.尖銳；敏銳；激烈
His mental acuity parallels his physical dominance. 他的精神和體質(zhì)一樣令人敬佩。
Loss of visual acuity and eye contact is generally accepted as visible indicators of alcohol-induced intoxication. 喪失視覺敏銳性和目光接觸通常可以被看作是醉酒的特征。
n.(想象力等)貧乏；無聊；空白
