被称为美国的射线枪，主动拒止系统更是一个雷达阵和微电波相结合的典型范例。
Dubbed America's ray Gun, by 60 Minutes, the Active Denial System is really more a combination radar array and microwave.
除此之外，在音乐电波的伴随下，我们还将来了解美国民众冬季最喜爱的运动有哪些。
And answer a question about Americans' favorite winter sports .
美国正在进行通过激光进行卫星对卫星通信的试验，它可以携带更多的数据，并且与无线电波相比不大容易受到干扰。
America is experimenting with satellite-to-satellite communication by laser, which can carry more data and is less prone to interference than radio waves.
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