科研之友
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<正>香蕉是黄色的,苹果是红色的,橙子是橘色的……我们为什么能看到这些颜色呢?How do you know if a banana is raw,ripe or rotten?Well,you could obviously take a bite and tell,but most of the times,you can tell just by looking.Especially if we?re talking about rotten bananas.A raw banana would look green,a ripe one would be yellow and a rotten one is most likely blackened.Have you wondered how we know the difference between these different
