n.敏锐；聪明
His business acumen helped him to succeed where others had failed. 他在商业上的敏锐帮他在其他人失败的地方获得成功。
The Parisian police, so much extolled for acumen, are cunning, but no more. 巴黎警察一向以聪明称道于世，其实不过是狡猾罢了。
