巴诺斯博士表示，寻找外星生命时，总是使用地球作为参照物。
Dr Baross said that looking for alien life has always involved using the Earth as a model.
德雷克博士说，把这项技术反过来，利用透镜作发射器而不是接收器，能使外星人发送大量强劲信号传遍银河系。
Reversing the technology to use the lens as a transmitter instead of a receiver would enable aliens to beam massively powerful signals across the galaxy, said Dr Drake.
此外，莱德博士还提出一种外星人可能受外星人青睐的特殊能量。
Moreover, Dr Learned proposes a specific energy that aliens might favour.
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