VOA慢速英语2016 电子设备过滤蓝光有助更好的睡眠（在线收听）

AS IT IS 2016-05-12 Filter Blue Light for Better Sleep 电子设备过滤蓝光有助更好的睡眠

Many people like to use their phones or tablets at night before they go to sleep.

很多人喜欢在晚上睡觉前玩手机和平板电脑。

However, the light from mobile devices can interfere with sleep. But not all light carries the same risk.

然而，这些电子设备发出的光会影响睡眠。但并非所有的光都具有同样的风险。

Recent studies have shown that within the light spectrum, blue light can have the worst effect on sleep.

最新研究表明，光谱上蓝光对睡眠影响最为严重。

A study in the UK showed that blue light actually can keep sleepy people awake. Tired drivers who were exposed to blue light became as alert as those who drank two cups of coffee.

英国一项研究表明，蓝光可以让疲倦的人保持清醒。接触蓝光的疲倦司机与喝了两杯咖啡的人一样的清醒。

Blue light filters have been developed for mobile devices to help with sleep issues. Apps are available for Android devices that filter blue light on screens. Updates to the iPhone, iPad and Amazon Fire tablet have added blue light filters.

Twilight是一款过滤安卓设备屏幕蓝光的免费软件。它可以设置为自动打开。还可以由用户自行打开或关闭。应用程序的设置中还可以更改过滤模式的亮度、颜色，以及自动打开或关闭的时间。

Twilight App - Android Devices

Twilight is a free app that filters blue light on Android device screens. It can be set to turn on by itself. Or users can turn it on and off when they want.In the app settings, you can change the intensity of the filter, the color and the time the filter turns on and off.

Twilight适应于所有应用程序，但是部分应用程序开启Twilight过滤模式时无法全屏使用。

Twilight works across all apps, though some apps may not work fully when Twilight's filter is on.

YouTube上有Twilight使用说明的视频。

Twilight is available free for Android devices in the Google Play store.

谷歌商店中的Twilight应用免费供安卓设备使用。

Night Shift - iPhone and iPad

Apple updated its operating system for iPhone and iPad earlier this year. Included in the update is Night Shift, a blue light filter.

今年初，苹果公司更新了手机和平板电脑的操作系统。包括蓝光过滤模式Night Shift的更新。

This feature is available on newer iPhones and iPads, including the iPhone 5s and later, and the iPad Air and later.

此功能支持iPhone 5s及更新版本的iPhone手机，以及iPad Air及更新版本的iPad。

Night Shift can be set to turn itself on every night or for the user to turn it on and off as wanted.

Night Shift可以设置成夜间自动模式，还可以根据用户需要打开和关闭。

To turn on Night Shift automatically every night, go to Settings, then Display, then Brightness and then Night Shift.On the Night Shift settings, move the switch to schedule Night Shift. It can be set for Night Shift to go on and off at specific times, or at sunset and sunrise.

想要Night Shift每晚自动打开，可以点击设置，然后点击显示，然后点击亮度，然后打开Night Shift。在Night Shift的设置中，开启Night Shift模式，可以将其设置为特定时间或日落后自动打开日出前自动关闭。

In Settings you can also adjust the color of the filter.

设置中还可以调节过滤器的颜色。

Night Shift can also be turned on and off in Control Center on the iPhone and iPad. Open Control Center by swiping up from the bottom of the screen.

Night Shift还可以在iPhone或iPad的控制中心打开或关闭。从屏幕底部向上滑动就能打开控制中心。

The sun and moon icon there identifies Night Shift. Tap it to turn Night Shift on or off at any time.

太阳和月亮的图案标志着Night Shift。随时点击该图标即可打开或关闭Night Shift。

Blue Shade – Amazon Fire Tablets

In an update to Fire tablets at the end of last year, Amazon introduced Blue Shade to filter blue light on screens. Blue Shade is available on more recent Fire tablets.

去年年底发布的新款亚马逊Fire平板中，亚马逊推出可过滤屏幕蓝光的Blue Shade应用。Blue Shade只适应于最新版本的Fire平板。

To turn on Blue Shade on a Fire tablet, swipe down from the top of the screen and tap Blue Shade. To adjust the color, go to Settings, then Display and, finally, Blue Shade.

想打开亚马逊Fire平板上的Blue Shade，从屏幕顶部向下滑动，并点击Blue Shade。想要调整颜色，请点击设置，然后点击显示就可以打开Blue Shade。

Words in This Story

mobile - adj. able to move from one place to another

spectrum - n. the group of colors that a ray of light can be separated into including red, orange, yellow, green, blue, indigo, and violet : the colors that can be seen in a rainbow

actually  - adv. used to refer to what is true or real?

expose - v. to cause (someone) to experience something or to be influenced or affected by something

alert - adj. able to think clearly and to notice things

filter - n. a device that prevents some kinds of light, sound, electronic noises, etc., from passing through?

app - n. a computer program that performs a particular task (such as word processing)

screen - n.  the usually flat part of a television or computer monitor that shows the images or text : the part of a television or computer that you look at when you are using it

intensity - n. the usually flat part of a television or computer monitor that shows the images or text : the part of a television or computer that you look at when you are using it

operating system - n. the main program in a computer that controls the way the computer works and makes it possible for other programs to function

schedule - v. to plan (something) at a certain time

specific - adj. special or particular?

swipe - v. to make a sweeping stroke

introduce - v. to make (something) available for the first time?