图片新闻【639】基因变种的小猪

Liu Shuping, a farmer specializing in raising pigs, presents a newly-born piglet with one head, two mouths, two noses and three eyes, for photographers in Xi'an, northwest China's Shannxi Province March 6, 2007. Experts attributed it's condition to genetic variation, local media reported. Picture taken March 6, 2007. CHINA OUT REUTERS/China Daily (CHINA)

词汇：

specialize vi.专攻, 专门研究
piglet n.小猪
attribute v.加于, 归结于
genetic adj.遗传的, 起源的
variation n.变更, 变化, 变异, 变种