The process begins when a blue photon hits a blue- absorbingpigment and energizes one of the electrons in the molecule .
当一个蓝色光子击中吸收蓝光的色素,提供能量给色素分子中的一个电子,整个过程随之启动。
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It sounds paradoxical, because the idea behind this hypothesis is that the red pigment is made in autumn leaves to protect chlorophyll, the light-absorbing chemical, from too much light.