prick up

动词 prick up:

1. raise
   同义词：prick, cock up

1. He pricked up his ears when they mentioned the salary.
   当他们提到工资时，他立刻注意起来。
2. The children pricked up their ears when they heard the word ice-cream'.
   孩子们听到｀冰激凌＇这个词，立刻注意起来。