如果在睡前你不得不使用电脑或移动设备，那请将亮度调低以减弱其影响。
If you absolutely must use a computer or mobile device later in the day, at least turn the screen brightness way down to semi-counter the effect of the light.
或者，他们寻找恒星亮度中微小减弱的地方——证明一个行星正在横越或经过从我们的角度所看到的那个恒星。
Or they look for tiny dips in a star's brightness - evidence that a planet is transiting, or passing in front of, the star from our perspective.
在接下来的三年里它减弱到了3.0等，而它最后变回原来的亮度花了超过15年的时间。
It then dwindled to magnitude 3.0 during the next three years, then took more than 15 years to brighten back to normal.
你能把那些灯的亮度减弱一点吗？
在接下来的晚上水星的亮度将慢慢减弱但是依然会随着逐渐离开太阳而获得高度。
In the evenings that follow, Mercury will slowly diminish in brightness, but it will also slowly gain altitude as it gradually moves away from the vicinity of the Sun.
我们曾经认为在典型螺旋星系的明亮中心以外，亮度随距中心距离的增加而急剧减弱。
It has been known for some time that outside the bright nucleus of a typical spiral galaxy luminosity falls off rapidly with distance from the center.
研究人员然后将超新星的固有亮度跟从地球上所看到的减弱后的亮度作以对比。
Researchers then compare the supernova's intrinsic brightness with its reduced brightness as viewed from Earth.
经分析，是中间片状栅极减弱了发光亮度。
We found its brightness is not enough since the middle gate is not transparent.
荧光材料最大的好处是无放射性，但是其发光时间短，随着储存的能量释放，亮度迅速减弱。
Their freedom from radioactivity and its potential hazards was a great advantage, but their glow tended to be short-lived, fading rapidly as the stored light-energy was discharged.
夜间开车遇到交会车辆时应该减弱前灯亮度。
You are asked to dip the car's headlights when you meet another car at night.
当气体从爆炸的中心远离时，它的亮度会减弱，并和附近的星际介质发生交互作用，产生各种颜色和波段的光。
As gas flies away from the detonated star, it decays and reacts with the interstellar medium, producing light in many different colors and energy bands.
当气体从爆炸的中心远离时，它的亮度会减弱，并和附近的星际介质发生交互作用，产生各种颜色和波段的光。
As gas flies away from the detonated star, it decays and reacts with the interstellar medium, producing light in many different colors and energy bands.
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