First, it must be light, the lighter the better…
首先它必须很轻，越轻越好……
The light source must therefore be immensely brighter if it is to be used as a headlight to illuminate the path, than if it is to be used as a signal to others.
与用作被人识别的信号相比，如果用作照亮路途的头灯的话，光源必须要明亮很多。
The sky must be very dark for a moonbow to be watched clearly—any bright light can obscure it.
要想清楚地观察到月虹，天空必须非常黑暗——任何明亮的光线都可能使它模糊。
Instead, many lenses must be used in combination, where each lens does its part to have the light end up where it is supposed to.
相反，许多镜头必须结合使用，其中每个镜头分别负责在截止位置拦截部分光线。
As Plato might put it, both Neo and the cave-dwellers must undertake a difficult journey from darkness to light if genuine knowledge (and consequently true "care of the soul") is to be attained.
柏拉图也许会说，不论neo还是穴居者，都需要经过从黑暗到光明的痛苦历程，才可能取得真经，并随之大彻大悟。
That is where it must be sought. One must follow and understand this fatal game that leads from lucidity in the face of existence to flight from light.
你却必须理解并继续这个致命的游戏，这个让人从清醒地面对存在到逃离阳光、奔向黑暗的游戏。
Because the flash must survive multiple reflections without being absorbed or becoming too weak, not just any light can be used. It must be a laser.
因为闪光必须在反射若干次后不被吸收或者变得太弱，所以不是所有的光都可以用，必须是激光。
First, it must be very light, the lighter the better.
首先，它必须是非常轻的越轻越好。
Suddenly, I am conscious of a white beam of light, knowing that I must follow it or be lost.
突然，我意识到一束白光，我知道我必须跟从它，否则我就会迷失。
Life eis change, must be light and shadow, left right, fine rain, it turns in this change and do not.
生活是变化的，须有光有影，有左有右，有晴有雨，滋味就在这变而不猛的曲折里面。
A well of light? There must be an opening somewhere up above? It must be in the garden of the observatory!
发光的井？肯定哪儿有个朝上的开口？一定在天文台的花园里！
Then it must surely be pregnant , I was such a situation, it is the second red light, I also do B-, but also can not see.
那肯定是怀孕了，我以前就是这样情况，也是很淡的第二条红线，我还去做B超，也看不出来。
It will be so in the twenty-first century in which the light rail must be integrated into a planned system for new geography (quite improvised) that cannot be postponed.
它还将充满二十一世纪风格，轻轨必须融入一个规划良好的系统，开创新格局(相当即兴)，且无法被推迟。
For a color to be seen, it must be hit by light of the same color and then reflected in the direction of the fish.
对于怎样可以看出颜色，它必须被相同颜色的光击中，然后反射到鱼的方向。
It must be very light because there is nothing but a kazoo in it.
他肯定很轻，因为我只放了一个卡祖在里面。
For some centuries before there was experimental proof, it was believed that the speed of light must be finite.
在有实验证明以前好几个世纪，人们就已相信光的速率必定是有限的。
And what DE Broglie said is well, if it's true that light, which has a wavelength can have momentum, then it must also be true that matter, which has momentum, also has a wavelength.
德布罗意说的是，如果光具有波长和动量是对的，那么物质具有动量和波长，也一定是对的。
It must be a kind of recuperator which has small volume, light weight, high recuperated effectiveness and high reliability for using on micro gas turbine.
微型燃机的特点决定了这种回热器必须具有体积小、重量轻、回热度高、可靠性好以及易于生产制造等特点。
The crystal plate must be thin so that we are able to see a source of light through it.
晶体的薄片必须薄得使我们通过它可以看见一个光源。
The normal operation of the light system directly is related to the peace of aircraft landing. In view of the importance of the airport light, it must be kept in normal working condition.
助航灯光系统的运行正常和否直接关系到飞机起降的平安，鉴于机场助航灯光对于飞机起降安全的重要性，所以必须一直保持设备始终处于正常工作状态。
Life is change, must be light and shadow, left right, fine rain, it turns in this change and do not.
生活是变化的，须有光有影，有左有右，有晴有雨，滋味就在这变而不猛的曲折里面。
If the light is a Point light, it must be a Cubemap.
如果灯光是一个点光源，它必须是一个立方图(cubemap)。
It must be pointed out that space coherence of beam is highly important for light beam quality evaluation.
此外还指出光束的空间相干性在光束空间质量评价中也应重视。
Regarding costs, beside the fact that they do not waste a lot of expensive electricity, it must also be mentioned that its battery tends to last a lot more than other light generating products.
关于成本，旁边的事实，即他们不要浪费了很多昂贵的电费，还必须提到，它的电池往往最后比其他光生成的产品很多。
If anyone deserves a happy day which brings contentment and a light heart, it must be you.
如果有人应当得到布满快乐的一天，应当有轻松舒畅的心情，这个人肯定是你。
Please know dear ones that whatever light surrounds your dark world must be dimmed before it can blaze again from the ashes to burn in the glory of the Phoenix.
请记住，我最亲爱的人们，围绕你们的黑暗世界的光明还必须变得暗淡，直到它在凤凰涅盘的荣耀中再次燃烧起来。
I'm not afraid of dark. Because it tells me that there must be light.
我不怕黑暗，因为那正好证实了光明的存在。
I'm not afraid of dark. Because it tells me that there must be light.
我不怕黑暗，因为那正好证实了光明的存在。
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