销售人员销售商品、服务和房产，提供某些产品的售后支持如教授如何操作收银机，并展示商品。
Sales WORKERS sell goods, services and property, and provide sales support in areas such as operating cash registers and displaying and demonstrating goods.
有一个小小成效：房产中介在向客户展示成千上万的新公寓单位时，他们过去会提供塑料鞋套来套住客户的脏鞋子；
One minor victory: When showing those hundreds of thousands of new condo units, real estate agents used to hand customers plastic booties to go over their dirty shoes;
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