pluck at

英 美
  • at prep.在;向,朝;处于…状态;在…远;(用于速度、比率等)以,达
  • pluck v.摘;猛拉;拔;拨弹(乐器)n.猛拉;勇气;动物内脏
Verb:
  1. pluck or pull at with the fingers;

    "She picked nervously at the buttons of her blouse"