以旧换新;除旧更新
exchange the old for the new
以旧换新
They refused to take my old car as part exchange for the new one.
他们拒绝接受我的旧车来折旧换新.
But battle lines are being drawn by old and new participants in Asia, which are determined to become the recognised commodities exchange for the region.
然而,亚洲新老参与者之间正在划定战线,它们都决心成为该地区得到认可的大宗商品交易所。
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