| 单词 | trade sth↔in |
| 释义 | ● ˌtrade sth↔ˈin to give sth used as part of the payment for sth new 以旧物折价换新物；折价贴换◆ He traded in his old car for a new Mercedes . 他把旧汽车折价添钱买了辆新奔驰。 ➡ related noun trade-inSee also trade |
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