当技术的使用与法律相冲突，我们应该怎样选择?这份托福听力背景材料就为大家举例说明，多普勒雷达到底有没有触碰法律的底线?
Doppler radar has been a weather forecaster’s best friend for decades. But more recently law enforcement has found another application. For the past two years the FBI, U.S. Marshals and other agencies have used a handheld Doppler radar machine to conduct surveillance through solid walls.
十几年来多普勒雷达一直是天气预报员的好朋友。但是最近的执法机关发现了另一个程序。在过去的两年联邦调查局的执法官和其他的代理机构已经开始使用手拿的多普勒雷达隔着墙进行监测。
Called the Range-R, this Doppler device sends radio frequency signals through concrete, wood and other nonmetal building materials and can measure the distance between itself and any moving objects on the other side. The Range-R can detect even subtle motion like breathing, although it can’t yet identify whether the respiration is coming from a person or their pet. Some 200 of the $6,000 devices have been sold.
被称作Range-R的多普勒器具可以发通过混凝土，木材和其他非金属建筑材料送射频信号也可以衡量本身之间的距离和另一边任何移动对象。Range-R可以监测像呼吸一样微小的运动。虽然它不能鉴别呼吸来自人还是动物。但是大约200个器具已经以6000美元卖了出去。
The problem is that law enforcement has used the Range-R sort of “under the radar,” if you will, sometimes employing it without a search warrant. The issue was brought to light in a court case after the device helped U.S. Marshals catch a parole violator at a house in Wichita. Federal appeals court judges were not pleased.
问题是执法机构运用的Range-R 是在雷达下面的，如果你愿意，你也可以监测，虽然没有搜查令。这个设备帮助美国执法官在威奇托的一个房子里抓住了假释行为人后，这个问题就暴露了。。
So that’s the current situation: police use of the technology to gain an edge versus concerns about violations of Fourth Amendment protections against unreasonable searches. Stay tuned for the developing legal decisions regarding this particular Doppler effect.
所以目前的情况就是警察通过技术来获得优势，同时又担心违反第四修正案的保护反对不合理的搜查。请继续关注关于这个特殊的多普勒效应的法律的决定。
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