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- 把钢琴放在那，背靠著墙。
Put the piano there, with its back against the wall.
- 背靠背站好，看看谁的个子高。
Stand back to back and let's see who's taller.
- 背靠大树，他坐在那里喘着大气。
He sat there panting, with his back leaning against a big tree.
- 我们的房子背靠著河。
Our house backs on(to) the river.
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