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現(xiàn)在，我們身邊的好多地方都有WiFi信號(hào)覆蓋了。不過總能聽到有人抱怨說信號(hào)不穩(wěn)，或者網(wǎng)速太慢。好消息來啦！據(jù)說，研究人員已經(jīng)研究出了更加便捷和快速的數(shù)據(jù)傳輸方式，你家的臺(tái)燈就能幫你下電影呢！聽起來是不是很酷？

Imagine only needing to hover under a street lamp to get public internet access, or downloading a movie from the lamp on your desk. There's a new technology on the block which could, quite literally as well as metaphorically, 'throw light on' how to meet the ever-increasing demand for high-speed wireless connectivity. Radio waves are replaced by light waves in a new method of data transmission which is being called Li-Fi(Light Fidelity).

想象一下這樣的場(chǎng)景，在街燈下走兩步就能連入公共區(qū)域因特網(wǎng)，通過桌上的臺(tái)燈就能下載電影。現(xiàn)在，有這樣一種新技術(shù)就可以解決上述這些高速無線網(wǎng)絡(luò)連接的需求問題。這種新技術(shù)叫做Li-Fi（光保真）技術(shù)，是用光波取代無線電波傳輸數(shù)據(jù)的技術(shù)。

As well as being a potential solution to our ever-increasing hunger for bandwidth, Li-Fi has other advantages over WiFi, such as being safe to use on an aircraft, in hospitals and medical devices, and even underwater, where WiFi doesn't work at all. Research suggests that Li-Fi has the potential to be faster, safer and cheaper than conventional WiFi technology.

除了能夠解決帶寬需求以外，Li-Fi相對(duì)于WiFi的優(yōu)勢(shì)還有：能夠在飛機(jī)和醫(yī)院等場(chǎng)合無障礙使用，甚至在WiFi不能到達(dá)的水下區(qū)域，Li-Fi也能大展拳腳。而且研究顯示，Li-Fi會(huì)比傳統(tǒng)的WiFi更快、更安全、更省錢。

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