传统的太阳能电池主要使用一种材料，只高效捕捉其一部分频段的能量。
Conventional solar cells use one primary material, which only captures one part of the spectrum efficiently.
安德里亚·戈德史密斯：人们可以采取某种方式来划分频谱，不管是通过时间、频率或者编码加以划分，然后将频段分配给用户，使他们之间的通话不受干扰。
Andrea Goldsmith: you can break up the frequency spectrum in some way whether it's time or frequency or codes so that you assign it to users so they don't interfere with each other.
安德里亚·戈德史密斯：人们可以采取某种方式来划分频谱，不管是通过时间、频率或者编码加以划分，然后将频段分配给用户，使他们之间的通话不受干扰。
Andrea Goldsmith: You can break up the frequency spectrum in some way whether it 's time or frequency or codes so that assign it to users so they don't interfere with each other.
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