To understand the first light of the universe, we really have to include the role of these supermassive black holes in galaxy formation.
为了了解宇宙的第一个光线，我们真的要把特大质量的黑洞在星系形成过程中所承担的角色考虑近来。It was dark, like dusk on a cloudy day, with only enough light to see that there was nothing to see.
周围一片漆黑，就好像是乌云密布的夜晚，光线只足够让你看清周围没有任何会动的活物。Scientists have known for a long time that the light of day and the dark of night play important roles in setting our internal clocks.
很早之前，科学家就知道了昼夜光线强弱的变化对生物钟调节起到了重要的作用，As I neared the bottom, I saw, by the aid of a little light that came from above, what sort of place it was.
当我放进底的时候，因为有一线光线在上面射下来，我见到这是什么地方。As is usual with right natures, the deity that lies ignominiously chained within an ephemeral human carcase shone out of him like a ray.
像光明的天性通常那样，被卑鄙耻辱地锁在倏忽幻灭的肉体里的神明，像一道光线一样，从他身上射了出来。Yes, we get the sun on the front of the house, that streams into the lounge very well all day.
是的，我们的房子从前面采光，整个白天起居室的光线都很好。She did not know whAT she was looking for, or AT, very definitely, yet she moved the lamp till it shone full on her.
她不太知道究竟她看什么，找什么，但是她把粉光移转到使光线满照在她的身上。Light traveling through the matter clump is warped and distorted, a phenomenon called gravitational lensing.
当光线穿过这些物质团块的时候就会发生弯曲或扭转，这种现象被称为“引力透镜效应”。That said, this is often one of the most beautiful months of the year, with soft, low light and warmth in the sun when you can catch it.
也就是说，这常常是一年中最美好的月份之一，当你能晒到太阳的时候，享受着柔和的，光线不足的，温暖的阳光。