单词courtesy card
n.: 优待卡网络: 优待卷;特别优待券;优惠卡
优待卡
courtesy card: a card that confers on its bearer a special right or privilege, AS at a supermarket or bank.
优待卡:给予持有者一种特殊权利或特权的卡片;如在超级市场或银行。