on sale
  待售,出售,廉價出售,拍賣
  Sale, n.
  1. The act of selling; the transfer of property, or a contract to transfer the ownership of property, from one person to another for a valuable consideration, or for a price in money.
  2. Opportunity of selling; demand; market.
     They shall have ready sale for them.   --Spenser.
  3. Public disposal to the highest bidder, or exposure of goods in market; auction.
  Bill of sale. See under Bill.
  Of sale, On sale, For sale, to be bought or sold; offered to purchasers; in the market.
  To set to sale, to offer for sale; to put up for purchase; to make merchandise of. [Obs.]
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