sackful [ˈsækfʊl]

例句:

• We delved through a sackful of letters to draw the winning name.
  我们把手探进一袋信件中抽取获奖者。
  
• Letters and cards of support have been pouring in by the sackful.
  声援的信件和卡片成袋成袋地涌来。
  
• He got a whole sackful of letters from listeners following the show.
  演出后他收到大量的听众来信.