| 单词 | part-exchange |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔part exchange〕Electrical retailers will often take away old appliances if you buy a new one, sometimes in part-exchange.买新电器时，电器经销商往往会拿走旧电器，有时会以旧换新。柯林斯高阶 |
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