以下为句子列表：
英文: A visual pigment may absorb two wavelengths equally, but even though their photons contain different energies, the cone cannot tell them apart, because they both cause the retinal to change shape and thus trigger the same molecular cascade leading to exci
中文: 同一个视色素可能对两种不同波长的吸收能力一样好，但即使这两种波长的光子能量不同，锥细胞也无法将之区分开来，因为这两种光都会改变视黄醛的形状，因而引发同样的分子事件，造成锥细胞的兴奋。
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英文: Some wavelengths are absorbed better than others, and each visual pigment is characterized by a spectrum that describes how absorption varies with wavelength.
中文: 这是因为锥细胞对不同波长的吸收能力不同，而且，每个视色素的差异在于其吸收光谱，也就是对不同波长的吸收率差异。
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