| 词汇 | trade up |
| 释义 | trade up intransitive verb (give sth in part-exchange for sth more expensive) 折价换购 ; (sell sth in order to buy sth more expensive) 卖次买好 ▸ to trade up and get sth 折价换购某物 ▸ to trade up to a larger house 卖掉小房买大房 |
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