A fixed device that sends or receives, amplifies, alters, and returns a radar signal, permitting a distant receiver to determine its bearing and sometimes its range.
一种发射、接收、放大、改变并返回雷达讯号的固定装置，允许远处的接收者测定它的情况，有时还有范围。
They are even collaborating with a group in China that will launch a satellite in 2016 which should be able to bounce light waves from a sender on one part of the Earth to distant receiver elsewhere.
他们甚至与中国的一个团队合作，于2016年发射一个卫星，从在地球某一部分的发射器向另外一处远距离的接收装置反射光线。
They are even collaborating with a group in China that will launch a satellite in 2016 which should be able to bounce light waves from a sender on one part of the Earth to distant receiver elsewhere.
他们甚至与中国的一个团队合作，于2016年发射一个卫星，从在地球某一部分的发射器向另外一处远距离的接收装置反射光线。
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