包退包换

• on appro
• guarantee change of article or refund if unsatisfactory
• guarantee to exchange if returned as unsuitable
• refund or change for a better one

参考释义

包退包换 [bāo tuì bāo huàn]

• -

例句

1. 格雷先生买这架照相机，包退包换。
   Mr Grey bought his camera on approval.