问题描述：
1.物值所需;2.性价比良好;3.大宗物品; 4.折扣网;5.DIY发烧友;6.网民;7.同城交易; 8.便民信息库.
问题解答：
The intrinsic value needs The performance-to-price ratio is good Lot item Discount network DIY fan Web cam With city transaction Convenient database
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上海旅游网