sale n．销售，销售额
例句：The merchant's cash sales for the day were $300.
那商人一天有300元的现金售货收入。
retail n．零售 喇，零售的 v．零售，转述 adv. 以零售方式
例句：Fred does wholesale business, while his brother is engaged in retail business.
弗瑞德经营批发生意，他弟弟则经营零售生意。
discount n．折扣
例句：On production of your membership card, you will receive a discount on purchases.
持会员证购物可享受折扣优待。
commodity n．日用品
例句：The economy of this country js heavily dependent on its exports of agricultural commodities.
这个国家的经济很大程度上依靠农产品的出口。
transaction n．办理，处理，学报，交易，事务
例句：Dennis's failure in this transaction was due to nothing else than his own carelessness.
开尼斯在这笔交易中的失利完全是由于他自己的粗心大意。
