他购买了一台包退包换的电视机。
He bought the television set on approval.
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我们送上这包包退商品，供君试用五天。
We have sent you these goods on five days' approval.
如有质量问题，六个月内可包退包换。
We promise replacement within 6 months if any quality problems are found.
报纸是以剩货包退的方式批发给商店去卖的。
The newspapers are supplied to the shop on a sale or return basis.
包退包换包赔制度。
A small package or bundle.
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