at option

英 美
  • adv.随意
  • at prep.在;向,朝;处于…状态;在…远;(用于速度、比率等)以,达
  • option n.选择权;可选物v.得到或获准进行选择
    用作副词 (adv.)
    1. He has put his car at my disposal.
      他已把车子让给我随意使用。
    2. I allow students to come and go at discretion.
      我允许学生们随意的来来去去。