Pic Title: 蜗牛的种类 Related Phrase: Species of snails Related pictures: 蜗牛的种类 Source: http://www.dw20.com/ Pic Description: 　　背着房子的蜗牛- Powered by www. 蜗牛的种类很多，约25000多种， No. / 3 Picture               Slide Show

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