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1. The emperor's throne is made of dragon-backed silk, and the dragon-backed silk isused to make the royal bed.
皇帝的宝座是用龙背丝绸制成的，而龙背丝绸是用来制作皇家床的。
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2.The king's bed is decorated with gold and silver threads, and the golden thread is used to decorate the royal bed.
国王的床装饰着金线和银线，而金线是用来装饰皇家床的。
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3. The queen's bed is covered with red velvet, and the red velvet is used to cover the royal bed.
皇后的床被红色天鹅绒覆盖，而红色天鹅绒是用来覆盖皇家床的。