1. 精明的;敏锐的;有眼光的;精于盘算的
A shrewd person is able to understand and judge a situation quickly and to use this understanding to their own advantage.
e.g. She's a shrewd businesswoman...
她是个精明的女商人。
e.g. His grey eyes were shrewd but kindly...
他灰色的眼睛目光锐利却很亲切。