incisive

1. ADJ You use incisive to describe a person, their thoughts, or their speech when you approve of their ability to think and express their ideas clearly, briefly, and forcefully. 敏锐的; 深刻的[表赞许]

He is a very shrewd operator with an incisive mind. 他是一位非常精明的经营者，有着敏锐的头脑。