Regular repeating actions such as sound waves, light waves, or radio waves have a certain frequency, or number of waves per second.
有规律的重复活动如声波、光波、无线电波都有一个特定的频率，或者说是每秒的波动次数。
The second problem is that Venus exhibits a halo of light when it is seen just outside the Sun's disc.
第二个问题是，当金星在太阳圆盘外被观测到时，它会呈现出光晕。
The devices, which register depth and light every second, were taped to the lower back, so that they caused the least amount of drag.
这种可以每秒钟记录深度和光线的装置被固定在企鹅的背上，以将阻力减到最小。
Even with today's radio equipment, the messages will take minutes-sometimes hours-on their journey, because radio and light waves travel at the same limited speed of 186, 000 miles a second.
即使有今天的无线电设备，信息传播也需要好几分钟，有时候甚至好几个小时，因为无线电和光波都是以每秒186,000英里的有限速度传播。
Marissa cruised through Dannerville's second light and continued toward the coast.
玛丽莎驾车通过丹维尔的第二个红绿灯，朝海岸开去。
In the course of doing the experiments, the researchers noticed that the particles showed up a few billionths of a second sooner than light would over the same distance.
在实验的过程中，研究人员发现这些粒子的用时比光要少了几十亿分之一秒。
Public polls suggest over half of Greece sees the second EU rescue package in a negative light.
公共投票显示超过一半的希腊人在消极的状态里期待着第二轮欧盟救市计划的到来。
Three long glass air wells pierce through the first and second level of the building, flooding the interior with natural light as well as “blowing” air through it.
一个通风竖井穿过了一二层楼，可以为楼的内部提供自然的阳光与新鲜的空气。
Chen Lina, gold medalist at the Asian Sailing Competition in 2008, said she lost the first round because the wind was too light and the second round probably because she was not strong enough.
2008年亚洲帆板赛金牌得主陈丽娜表示，第一轮她因为风力太小失利，第二轮体力欠佳。
Poignantly, the second returned with photographs of a mining helmet, its light still glowing.
让人沉痛的是，第二个机器人带出了采集到的采矿头盔的照片，那些矿灯，仍旧明晃晃地亮着。
Light travels faster than sound at the speed of 300,000 kilometres per second.
光速比声速要快，为每秒钟30万公里。
According to Einstein's 1905 special theory of relativity, nothing is meant to be able to go faster than the speed of light — 186, 282 miles per second.
根据爱因斯坦1905年发表的相对论，任何物体的速度都不可能超越光速，即186282英里/秒。
It can take 6.1 million pictures in a single second, at a shutter speed of 440 trillionths of a second. Light itself moves just a fraction of a centimeter in that time.
一秒钟内可拍摄610万张照片，快门速度为440万亿分之一秒，在这么短的时间内光也只前进了不到一厘米。
The second laser, which produces red light, then stimulates particular sites to take the second shape. This corresponds to "one" in binary code.
产生红光的第二个激光器刺激某些地方，使其呈现第二种形状，此形状对应于二进制编码中的“1”。
At full power, trillions of protons will race around the LHC accelerator ring 11, 245 times a second, travelling at 99.99 percent the speed of light.
全功率运行时，数兆的质子在大型强子对撞机的加速环中加速，一秒钟可绕行11245圈，速度达到光速的99.99%。
Now, there are a few flies in the ointment.That 10-frames-a-second mode requires a lot of light;
美中不足的是，10帧/秒的拍摄需要充足的光线，这在室内就有些捉襟见肘了。
As this third pulse approaches the tail of the second one it will also slow down (because the speed of light in the glass it is passing through has been reduced by the second pulse's passage).
随着第三个脉冲接触到第二个脉冲的尾部，它的速度也同样被减慢(因为其穿越的玻璃中的光速已经被第二个脉冲的穿越而减慢)。
Shockingly, the neutrinos appeared to beat light speed by 60 billionths of a second.
令人震惊的是，中微子出现了以1秒钟里的10亿分之60击败了光速的试验结果。
Walk straight on. Cross the street at the second traffic light.
一直往前走，在第二个交通灯那儿马路就到了。
Thanks to its light "pull" update policy it is usually the second best performing strategy.
感谢它的轻量级“拉”更新策略，它通常是性能第二好的策略。
One survey was done before the city had finished building a new light rail system, and the second was done from 12 to 18 months after the rail's completion.
在调查之前，已经完成了一个新的轻型城市轨道交通系统的建设，第二个在轨道的完成后12个月到18个月建设。
Special relativity is also based on a second assumption that gives the speed of light - 186, 000 miles per second (300 million meters per second) - in a vacuum a special status.
狭义相对论也奠基于它的第二个假设：他所设定的真空中光速为每秒186,000英里(每秒300,000千米)有它的特殊地位。
This dispersed the light around the events happening between the lenses. The light then passed through the second split time lens and returned to its original phase.
随后用激光穿过第一块透镜，导致两块透镜之间发生的时间周围的光产生弥散，随后光通过第二块时间透镜回到初始相位。
Even if a mosquito somehow managed to penetrate such a barrier, a second light curtain set up around a bed, for example, would provide further protection.
即使蚊子能穿过一道此类屏障，第二道光幕，比如说设立在床周围，会提供进一步的保护。
The second problem, though, is that laser light can "speckle", which is to say that when it scatters off a rough surface, a random shimmering and sparkling pattern is produced.
第二个问题就是激光光源会产生“光斑”，也就是说激光会在一个不均匀的表面发生散射，产生随机明暗斑点。
The second problem, though, is that laser light can “speckle”, which is to say that when it scatters off a rough surface, a random shimmering and sparkling pattern is produced.
第二个问题就是激光光源会产生“光斑”，也就是说激光会在一个不均匀的表面发生散射，产生随机明暗斑点。
Quality assured second-line anti-TB drugs are available at reduced prices for projects approved by the Green Light Committee.
有质量保证的二线抗结核药物可为经绿灯委员会批准的项目以降低的价格获得。
If these pictures are now viewed in the light of that twenty-second year of my life, some features may be discerned even through their crude drawing and blurred colouring.
假如现在用我二十二岁时的眼光来看这些画，即使画面粗糙，色调模糊，也仍能辨认出它们的一些特色。
They have to know that treating MDR-TB can be very, very expensive – so they have to look for help from the Green Light Committee in securing the second-line drugs.
他们要知道，治疗耐多药结核病费用极其昂贵，因此，他们要从绿灯委员会那里寻求援助，确保二线药物供应。
They have to know that treating MDR-TB can be very, very expensive – so they have to look for help from the Green Light Committee in securing the second-line drugs.
他们要知道，治疗耐多药结核病费用极其昂贵，因此，他们要从绿灯委员会那里寻求援助，确保二线药物供应。
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