on sale
1.有售,上市
There are some nice apples on sale in that shop.
那家商店有些很好的苹果出售.
The book will be on sale next month.
这本书将于下个月上市.
2.廉价出售
I got this hat on sale; it was very cheap.
我在大减价时买到这顶帽子,价格很便宜.
This ten-dollar hat is now on sale for five.
十美元一顶的帽子现在减价卖五美元.