People who don't talk with each other for a year do not belong in the same band.
一年不曾交流沟通的乐队成员，不该属于同一支乐队。
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A scheme is presented for OFDM digital signal and am signal to transmit at the same band.
提出了一种将基于OFDM的数字信号和AM信号在同频带内传输的方案。
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