trade down (trading,traded,trades)

• 1.  

  PHRASAL VERB（动词词组） If someone trades down, they sell something such as their car or house and buy a less expensive one. 卖掉 (汽车、房子等) 去买较便宜的东西

  例：

  They are selling their five-bedroom house and trading down to a two-bedroom apartment.

  他们正在变卖其五居室的房子，去买一处两居室的公寓。