It is like a grain of mustard seed, which, when it is sown in the earth, is less than all the seeds that be in the earth.
好像一粒芥菜种，种在地里的时候，虽比地上的百种都小。
But such transits have paved the way for what might prove to be one of the most vital breakthroughs in the cosmos—detecting Earth-sized planets orbiting other stars.
但是这样的凌日现象已经为被证明可能是宇宙中最重要的突破之一的说法铺平了道路，这个说法即找到那些围绕其他恒星轨道公转的和地球大小相似的行星。
On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.
在地球上，人们认为，表明太阳黑子周期最可靠的迹象之一是树木的生长速度，就像树干横截面上可见的年轮一样。
As Venus was closer to the Earth, its parallax angle would be larger, and Halley worked out that by using Venus it would be possible to measure the Suns distance to 1 part in 500.
由于金星离地球更近，所以它的视差角会更大。哈雷计算出，利用金星可以测量出太阳与地球之间的距离，误差为五百分之一。
It was believed that their palace on Earth should be just like the ziweigong in the sky.
人们认为他们在地上的宫殿应该和天上的紫微宫一样。
They are made in 10 minutes, used in 20 minutes and normally remain on the earth for over 100 years since they are hard to be broken down.
它们在10分钟内制成，在20分钟内使用完毕，但由于很难被降解，它们通常会在地球上残留100年以上。
But we can all remind ourselves that the richness of this country was not born in the resources of the earth, though they be plentiful, but in the men that took its measure.
但是我们都能提醒自己：这个国家的富有并非来自于地球上的资源，尽管他们应该很丰富，而是来自于利用了它的人类。
The grape should be heled in the earth in winter.
冬天要把葡萄藤埋入土中以过冬。
Geothermal water from deeper in the Earth can be used directly for heating homes and offices, or for growing plants in greenhouses.
来自地球更深处的地热水可以直接用来为家庭和办公室供暖，或是为温室中的植物生长提供帮助。
It is the most effective solar energy conversion process on Earth and all power needs for a year could be met by the energy contained in the sunlight hitting the Earth in one hour.
这是地球上最有效的太阳能转化过程，如果将太阳光照射地球表面一个小时产生的所有能量聚积起来，就足以满足人类整整一年的能源需求。
The Earth would be considered in its planetary relations alone.
而地球则仅被视为与其它行星的一种关系。
This said, the fact that a planet so unlike the Earth could be habitable bodes pretty well for the search for life in general.
也就是说，这样一个与地球非常类似的星球居然适合居住，这也预示着寻找生命存在的大好前景。
What will the earth be like in the distant future?
在遥远的未来地球会是什么样呢？
The ideal discovery would be a planet similar in composition to Earth that lies within the Goldilocks Zone and orbits a stable star.
理想的情况是这样的：在居住区内发现和地球组成结构类似的行星，并且围绕稳定的恒星公转。
But in that scenario, the Earth would not be significantly affected.
而在那种情况下，地球不会受到重大影响。
Although we live in the cliff, there must be some earth under us that is unselfish.
即使生长在悬崖绝壁，树的脚下，也一定有一抔无私奉献的泥土。
If I thought the earth was being friendly toward me, I would be engaging in animism, the term used for giving human qualities to inanimate objects.
如果我认为地球对我的态度很友好，那我就是坚信“万物有灵论”——这一术语常用来指无生命物体有人的特点。
The precious metals that we see on Earth today may be largely heavenly in nature, coming from the sky billions of years ago, scientists now find.
我们今天在地球上所看到的贵金属本质上可能主要是天上的，来自几十亿年前的太空，科学家们现在发现。
The satellite traveling in the orbit is always escaping from the earth only to be pulled back by gravity.
在轨道上运行的卫星总是要飞离地球，而结果总是被地心引力拉回来。
If you want to help lower greenhouse gas emissions, they conclude in a report to be published in the journal Earth Interactions, become a vegetarian.
如果你想帮地球降低温室气体排放，他们即将发表于《地球交互作用》期刊的报告中的结论是：吃素吧！
In the future, if any alien civilization arrives to Earth, they would be able to instantly tell the history of Earth's geography and know where in time we lived.
包括加州漂移到太平洋”在遥远的未来，如果任何一个外星文明到达地球，他们就会被告知地球形成的历史并且知道我们生活在哪个时期。
On Sunday, the eve of the 40th anniversary of their return to Earth, the three will be reunited in public for what is likely to be the last time.
在他们返回地球40周年纪念日前一天的周日晚上，三位航天英雄将进行可能是最后一次的公开重聚。
No doubt, an Earth hanging in our sky would be the most convincing evidence of all.
毋庸置疑，一个挂在天空中的地球是最具说服力的证据。
According to the published reports, the supposed WHO study had predicted that the last blond on earth would be in Finland, which today has the world's highest concentration of true blondes.
根据此前的报道，假想中的世界卫生组织研究预测地球上最后一个金发女郎将出现在芬兰，那是当今世上天然金发女郎密度最高的地方。
There are no planetary alignments in the next few decades, Earth will not cross the galactic plane in 2012, and even if these alignments were to occur, their effects on the Earth would be negligible.
在未来几十年没有行星直线排列问题，地球也不会在2012年跨越银河平面，即使出现此类排列方式，对地球的影响也可以忽略不计。
There are no planetary alignments in the next few decades, Earth will not cross the galactic plane in 2012, and even if these alignments were to occur, their effects on the Earth would be negligible.
在未来几十年没有行星直线排列问题，地球也不会在2012年跨越银河平面，即使出现此类排列方式，对地球的影响也可以忽略不计。
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