shrewd

adj.

1. 机灵的, 精明的
   • He is a shrewd businessman.
     他是一个精明的商人。
   • His answer to the journalist is a shrewd one.
     他回答记者的问题是很机敏的。
   • Though still in his teens, Tom is shrewd at a bargain.
     虽然汤姆才十多岁, 可是讨价还价却很在行。
   • He's too shrewd to be trusted in business matters.
     他太狡猾, 生意上不宜信任。