There was still snow on the ground, but the flower could come out because the sunlight already passed through the ground.
尽管地上还有残雪，但花也可以出来的，毕竟阳光已经透过了地面。
This is called alpenglow, and it happens because the sunlight reflects downward off snow, water, or ice particles low in the atmosphere.
“染山霞”现象是由于太阳光线被山上的雪或大气中的水珠和冰粒折射而形成。
Summer leaves are green because they are full of chlorophyll, the molecule that captures sunlight converts that energy into new building materials for the tree.
夏天的树叶是绿色的，因为它们富含叶绿素，这种捕捉阳光的分子可以将这些能量转化为新的树木生长材料。
Photosynthetic life is impossible there because sunlight is completely absent, but life such as the microbes that flourish deep within earth may still be possible.
因为那里完全没有阳光，所以不可能有光合作用的生命，但像在地球深处蓬勃生长的微生物之类的生命可能仍然存在。
It would stop growing taller, because that plant would sense that it wasn't going to get enough sunlight to provide the energy to grow large.
它会停止长高，因为植物会感觉到它得不到足够的阳光提供能量来让它们长大。
Greenhouses where plants are kept warm and provided with sunlight, because the walls of the building are made entirely of glass.
温室里的植物可以保持温暖并吸收阳光，因为该建筑的墙壁完全由玻璃制成。
Sunlight is therefore a stimulus for melanocytes to produce melanin because they are trying to protect the body from UV rays.
阳光能够刺激黑色素细胞产生黑素，这是因为黑素要在紫外线的辐射下保护我们的身体。
Usually, of course, we can only see the moon because it reflects sunlight.
通常我们只能看到月球是因为月球反射太阳光。
The authors say women from some ethnic minorities are recognised to be at greater risk because their darker skin means they do not absorb as much sunlight.
该文作者认为一些少数族裔的妇女存在更大的患病风险，因为他们的皮肤颜色更深，吸收的阳光相对较少。
The soot produced by burning fossil fuels has a stronger warming effect because it contains a higher ratio of black carbon to sulfate, which reflects sunlight to produce a cooling effect.
燃烧化石燃料产生的煤烟增温效应较强，因为其中黑碳对硫酸盐的比例较高，而硫酸盐是可以反射阳光产生降温效果。
The moon doesn't go black because indirect sunlight still reaches it after passing through the Earth's atmosphere.
月球不会完全变黑，因为部分阳光经过地球大气之后，仍能间接照射到月面。
History tells us this was because the purple dye harvested from the sea snail did not fade due to sunlight, but instead became brighter and more intense from weathering.
历史告诉我们，这是因为紫色染料得自海螺，它在阳光下不会褪色，相反，它会变得更明亮，在日晒雨淋之下尤为鲜艳。
We can see a number of comets with the naked eye when they pass close to the sun because their comas and tails reflect sunlight or even glow because of energy they absorb from the sun.
很多彗星接近太阳时，我们可以用肉眼看见，因为它们的彗发和彗尾可以反射阳光，甚至因为受阳光激发而自发光。
Because in the north the sum is low during winter, the sunlight appears quite blue. Because the sun is higher during summer, the hot summer sunlight appears yellow.
因为在北方冬季太阳低，使人觉得似乎阳光有点发蓝，而在炎热的夏季令人觉得阳光似乎是黄色的。
Unlike the sun, whose density is such that it supports nuclear fusion that generates bright sunlight, Gliese 581 is a red dwarf, so-called because the star is small and dim.
与太阳不同，太阳密度太高，能够支持生成强烈太阳光的核聚变，而Gliese 581是颗红矮星，之所以这么叫是因为这个恒星又小又暗。
This was a great surprise because everyone thought that the shadow (or X-ray) had been created by a chemical reaction with sunlight.
这种现象引起了人们很大的惊讶，因为当时每个人都会认为影像(或X -射线)是由在阳光的触媒下的某种化学反应所产生。
The belt of vegetation that crosses Africa below the Sahara is very dark because most of the sunlight is absorbed by plants for photosynthesis.
在撒哈拉沙漠下方，横贯非洲中部的植被带颜色非常深，因为植物由于光合作用吸收了大多数太阳光。
Artificial illumination on a Kuiper Belt Object would stand out because it would vary less than reflected sunlight does when the world moved toward or away from the sun.
柯伊伯带天体上的人工照明之所以会显得特别突出是因为不管它转向或者转离太阳，其所反射的太阳光都不会变化很大。
The odd jellyfish are found naturally in the Mediterranean, because they require a huge amount of sunlight to survive.
这种奇怪的水母发现于地中海，因为他们需要大量的阳光才能生存。
Most scientists think that phytoplankton are dormant in the winter and flourish in the spring because an increase of sunlight, warmer temperatures, and abundant nutrients.
大多数科学家认为，由于增加的日照、温暖的温度以及丰富的营养的原因，浮游植物在冬季休眠，而在春天蓬勃发展。
But because the laser beam is comprised of a single wavelength of light, the conversion to electricity is much more efficient than converting multiple wavelengths of sunlight to energy.
但由于镭射光束是有一单一波长的光组成，它的转化就要比拥有多种光波的太阳能转化成能量效率更高。
That is necessary because the balloon concentrates sunlight up to 400 times, and without this cooling the cell would quickly burn out.
水冷式设计之所以必要，是因为这种气球可以集中400倍的阳光，太阳能面板若没有冷却设计，会很快地晒到烧掉。
Vitamin D, the so-called sunshine vitamin because it’s made when sunlight gets your skin.
维生素D，它是当阳光晒到皮肤时生成的，所以叫做阳光维生素。
This is because some indirect sunlight still reaches the moon after passing through the Earth's atmosphere, which scatters blue light.
这是因为通过地球大气层呈现蓝色的太阳光仍旧会间接抵达月球。
Capturing sunlight and putting it to work is difficult because the solar energy that reaches the earth is spread out over such a large area.
由于到达地球的太阳能散布地域之广，使得捕获阳光并付诸利用变得非常困难。
Many species had also evolved to produce their own light because sunlight fails to penetrate more than 800 metres beneath the sea surface.
因为阳光穿不透800多米深海表面，有些物种还进化出自己的光。
I wonder whether the sadness inside a human sometimes is just because of lack of sunlight?
我想是否一个人的悲伤有时仅仅是因为缺少阳光。
Uranus appears blue because methane at high altitudes absorbs the red part of sunlight.
天王星呈蓝色，因为在高海拔的甲烷吸收阳光的红色部分。
Uranus appears blue because methane at high altitudes absorbs the red part of sunlight.
天王星呈蓝色，因为在高海拔的甲烷吸收阳光的红色部分。
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