Sell off
减价出售；低价处理
The shopkeeper is going to sell off all the goods in the shop.
店主打算把商店里的所有货物都抛售出去。
出售（全部或部分企业）
The company has sold off its restaurant business.
这家公司已经出售了其餐饮业务。
Sell on
转卖
He bought a used car and then sold it on.
他买了一辆二手车, 然后把它转卖出去了。
Sell out
卖光
The vendor sold out of the watermelons within an hour.
小贩不到一个小时就把西瓜卖光了。
