Any differences between them—one twin having younger looking skin, for example—must be due to environmental factors such as less time spent in the sun.
他们之间的任何差异（例如，双胞胎中有一个的皮肤看起来更年轻）一定是由于环境因素导致的，如在阳光下呆的时间更少。
The youngster's cheeks were in such a glow that it showed even through her sun-browned skin.
小女孩的双颊红扑扑的，棕黑色的皮肤在阳光下闪闪发光。
Far out over the sea the sun was setting with such splendor that I would almost have sworn I could hear the water hiss where it touched.
在遥远的海面上，太阳正辉煌地落下，我几乎可以发誓，我能听到水触到的地方发出嘶嘶声。
Thanks to this law, we know that a planet relatively close to the sun, like Venus, has a far briefer orbital period than a distant planet, such as Neptune.
正因为了有这条定律，我们才能得知例如金星这样离日相对较近的行星的公转周期要短于离日较远的行星，例如海王星。
Examples: children believe that the sun can think and follows them around; because of such beliefs, they often add smiley faces on sketched SUNS.
举一些例子：孩子们相信太阳能够思考并且紧随在他们的周围；因为有这样的信念，他们经常给手绘的太阳加上微笑。
For decades, astronomers have been confident that relatively low-mass stars such as our sun form by the gradual accretion, or buildup, of mass from a disk of gas and dust.
几十年来，天文学家已经确信质量相对较小的星体，如我们的太阳，是逐渐积累或建立自碟状气体或尘埃而形成的。
Such "sun ship" would have a large enough surface area to carry the enormous number of solar cells necessary to move any appreciable load.
这种“太阳能飞艇”必须要很大的面积以携带大量的太阳能电池，这样才有可能运载可观的载荷。
Solar storms could wreak havoc on satellites and power grids, and so scientists have humbly turned to netizens across the world to help watch our sun for possible signs of such storms.
太阳风暴会对卫星和电网造成严重破坏，所以科学家谦虚地请求世界各地的网民帮忙观察太阳，寻找可能预示着太阳风暴的迹象。
In free space, such heat could come only from a star-in this case, presumably, the youthful sun.
在自由的空间，这样的热量只能来自于星星——既然这样的话，推测起来这个星星就是年轻的太阳。
Methinks I have seen just such figures, when the sun has been shining through a richly painted window, and tracing out the golden and crimson images across the floor.
我想，当阳光穿过五彩绘就的窗户、在地板上反射出金黄和绯红的形象时，我看到过这样子的人物。
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。
The media reinforce this belief, especially such Eurosceptic newspapers as the Sun and the Daily Mail (neither of which troubles to keep a staff correspondent in Brussels).
大众媒体使这种认识更加深入人心，特别是一些带有欧洲批评权利的报纸，像是太阳报和每日邮报(两家报社从不考虑安排一名驻布鲁塞尔记者)。
And if the medieval warmth were due to some external factor, such as a slightly brighter sun, that would suggest that the climate was indeed quite sensitive.
而且如果人们将中世纪的暖化归结于一些外在因素，比如一个活动稍微活跃的太阳，这就表示气候的确是十分敏感的。
As well, the inner sun would pose numerous problems such as the inner inhabitants most likely being sucked into its gravity or caught in solar flares from it.
同样，地内太阳也会产生很多问题，比如底下居民很可能被太阳的引力给吸住无法动弹，或者因太阳的耀斑而遭殃。
Mummies can be dried out by extreme cold, by the sun, by smoke, or using chemicals such as natron.
木乃伊能够通过极端寒冷，日晒，烟熏，或者使用化学物质如泡碱来变干。
If the water were as smooth as a mirror, a line of perfect reflections of the Sun would appear in images such as this.
如果水面像镜子一样光滑，一束完美的太阳反射光便会在这样的图像中出现。
Since we complete a circle around the sun every year, the stars of summer, such as those in the Big Dipper, are always the stars of summer.
由于每年绕着太阳完成一个循环，夏日里我们所看到的星星，比如北斗七星，它们始终在其他年份的夏天里也都能看得到。
They also originate from more mundane sources such as the sun.
它们也可以从像太阳那样的较温和的发生源产生。
Auroras, such as the one pictured above, pleasingly testify to a stream of particles from the sun that gets through and hits the atmosphere.
就像上面图片中展示的那样，极光以一种令人愉快的方式证明了存在一股来自于太阳的物质颗粒流穿过并撞击大气层。
The invention of the steam press in the early 19th century, and the emergence of mass-market newspapers such as the new York Sun, therefore marked a profound shift.
在19世纪早期平床式印刷机的发明，以及象《纽约太阳报》这样的畅销报纸的出现，标志着一个影响深远的变化。
How about if you saw a distant star, claimed it was a sun, would the claim be that since it was not clearly visible to be similar to our sun, it wasn't visible as such?
如果你看到一颗遥远的星星，然后你说它是太阳，这肯定是不行的，因为你看到的星星还没清楚到足以让你觉得它像太阳。
In actuality, there's no such thing as "renewable energy" : all energy, even the sun, is limited.
实际上，根本就没有“可再生能源”这回事：所有的能源，甚至太阳，都是有限的、不可再生的。
Across the Sun Belt and in hard-hit industrial states such as Ohio and Michigan, tanking home mortgages combined with rising joblessness spell more trouble.
在整个阳光带以及工业基地州像俄亥俄和密西根州，房产抵押贷款联合失业危机正在招致更多的麻烦。
Quantum tunneling is involved in many physical processes, such as radioactive decay and the nuclear fusion that takes place in the Sun.
量子隧穿发生在许多的物理过程中，比如说放射性衰变和太阳上发生的核聚变。
Renewable sources of energy such as wind and solar power are intermittent. The wind doesn't always blow; the sun doesn't always shine.
再生能源是间歇性的，比如风能、太阳能：没有常刮的风，也不会总是阳光灿烂。
Viewing solar eclipses safely requires special filters on glasses, cameras, and telescopes, because looking directly at the sun without such protection can cause eye damage.
安全地观测日食需要特制在玻璃、暗箱或望远镜上的过滤装置，因为没有这样的保护装置直视太阳会导致视觉创伤。
Viewing solar eclipses safely requires special filters on glasses, cameras, and telescopes, because looking directly at the sun without such protection can cause eye damage.
安全地观测日食需要特制在玻璃、暗箱或望远镜上的过滤装置，因为没有这样的保护装置直视太阳会导致视觉创伤。
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