狗能辨别颜色吗?
@@ The answer is No.
Man's best friend is colorblind, but, fortunately, his survival does not depend upon the ability to see colors. His keen sense of smell compensates for his inability to see colors, and enables him to differentiate(区分) between things.
2006-07-31(万方平台首次上网日期,不代表论文的发表时间)
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