2018考博英语阅读经济学人文章每日精析：无线通讯

　　考博英语阅读大部分博士研究生招生院校都使用《经济学人》杂志文章作为题源，新东方在线考博频道为考博生们将其中的文章进行深度分析，希望能提高大家的考博英语阅读水平，读懂长难句。

　　Wireless communication无线通讯

　　In a whole new light装在一种新型灯泡中

　　Lighting fixtures that also transmit data are starting to appear能传送数据的照明装置问世

　　Sep 24th 2016 | From the print edition 2016年9月24日|摘自印刷版

　　Once upon a time FLICKERING lamps are normally a headache-inducing nuisance. But if the flickering happens millions of times a second—far faster than the eye can see or the brain respond to—then it might be harnessed to do something useful, like transmitting data. That, at least, is the idea behind a technology dubbed Li-Fi by its creators.很久之前，灯光闪烁不定是一件让人头疼的麻烦事，但如果灯光每秒闪烁几百万次——其速度之快人眼捕捉不到、大脑也反应不过来的话——那么或许可以用它来做一些有用的事，比如传送数据。至少这是Li-Fi技术发明人的想法。

　　nuisance n 讨厌的(人，行为)麻烦事harness v 利用，控制dub 把…称为

　　Li-Fi works with light-emitting diodes (LEDs), an increasingly popular way of illuminating homes and offices, and applies the same principle as that used by naval signal lamps. In other words, it encodes messages in flashes of light. It can be used to create a local-area network, or LAN, in a way similar to the LANs made possible by standard, microwave-based Wi-Fi.Li-Fi通过LED灯传播无线信号。其原理和海军信号灯类似。目前LED灯在家庭和办公室照明中越来越流行。换句话说，Li-Fi技术把编码写进灯光的闪烁中。可以用它来创建一个类似于标准微波Wi-Fi的局域网(又称为LAN)。

　　Illuminate v照亮LED(light-emitting diode) 发光二极管

　　Such LANs would, Li-Fi’s supporters believe, have two advantages over standard Wi-Fi. One is that light does not penetrate walls. A Li-Fi LAN in a windowless room is thus more secure than one using Wi-Fi, whose microwave signals pass easily through most building materials and can thus be listened to by outsiders. The other advantage is that light does not interfere with radio or radar signals in the way that microwaves sometimes do. Li-Fi can therefore be installed in hospitals, nuclear plants and other sites where Wi-Fi might create dangerous interference with electronic kit.支持Li-Fi技术的人认为，与标准Wi-Fi相比，Li-Fi局域网有两个优势。第一，光不能穿过墙壁。而微波信号可以轻易的穿过大多数建筑材料，很容易被外面的人窃听，因此在一个没有窗户的房间，Li-Fi局域网比用Wi-Fi局域网更安全。第二，光不会像微波一样受到无线电或者雷达信号的干扰，因此Li-Fi可以运用于医院、核电站以及其他Wi-Fi信号容易受到电子设备干扰的地方。

　　Penetrate v 穿透Interfere v 妨碍

　　One business about to benefit from this selectivity is commercial aviation. Though aircraft avionics have been hardened over the years, to reduce the risk of interference from radio and microwave signals, using Li-Fi would make absolutely certain. It would mean that LANs could be set up in the cabin, distributing entertainment to passengers and permitting those with Li-Fi-equipped phones and computers to contact the outside world.航空业将会从这项技术中受益。多年来，尽管航空电子设备已经日渐成熟，但为了减少无线电和微波信号的干扰，使用Li-Fi技术势在必行。这也就意味着，机舱内可以建设域网，用以扩充乘客的娱乐项目，并且可以让配备Li-Fi功能的手机和电脑与外界保持联系。