Mars takes 687 Earth days to travel around the sun, twice as much as an Earth year.
火星绕太阳运转一次需要687个地球日，为地球年的两倍。
It is orbiting a star called Gliese 876, 15 light years from Earth, with an orbit time of just 1.94 Earth days.
这颗行星围绕着一颗名为“格里斯876”的恒星运转，该恒星距地球15光年，绕轨道运行一周的时间约为地球上的1.94天。
For 687 Earth days, Surveyor will utilize this orbital vantage point to collect scientific data on a continuous basis.
在687个地球日里，勘测者号将利用这种轨道的有利位置连续不断地收集科学数据。
Astronomers estimate the newly-found planet is about 45 times more massive than Earth, and has a year lasting 260 Earth days.
宇航员估计最近发现的这颗行星质量比地球重45倍，一年有260天。
The planet Venus takes 243 earth-days to turn once on its axis, so incoming heat from the sun is added and distributed at a more leisurely, observable pace.
金星自转一周需要243个地球日，因此来自太阳的热量以更悠闲、更容易观察到的速度被吸收和分配。
Our geography teacher told us the moon circles the earth every 28 days.
我们的地理老师告诉我们月亮每28天绕地球一周。
Mars orbits the Sun in 687 days, which means 1 Earth year on Mars is 687 days.
火星绕太阳公转的周期是687天，这意味着火星上的1个地球年是687天。
In winter, when your part of the earth points away from the sun, you have colder days.
在冬天，当你所在的地球部分的朝向远离太阳时，天气就会变冷。
In its 20 days of working life, it sent space information to the Earth.
在它20天的工作寿命中，它向地球发送了太空信息。
When the part of the earth where you live is towards the sun, you have hotter days.
当你所居住的地球部分朝向太阳时，天气就会变热。
Its tighter orbit meant it needed just 20 days to go around us. A day on Earth back then was only 18 hours long.
那时月球运行轨道较小，绕我们一周也就需要20天的时间，当时地球上的一天也就只有18个小时。
There was a time when fishermen were seen as the last hunter-gatherers-pitting their wits against the elements by pursuing their quarry on the last frontier on Earth. Those days are gone.
渔民曾经被视为最后的猎人群体——使用智慧在地球的最后一块边界追逐他们的猎物，并以此来对抗自然环境；这样的日子一去不复返了。
During our short days we experience cold, because the warming light of the sun does not reach our earth directly.
而在白昼短暂的那些日子，我们之所以经历着寒冷，也是因为太阳光线不能直射大地。
It takes Earth 24 hours to complete a rotation on its axis, and roughly 365 days to complete an orbit around the sun.
地球要花费24小时完成绕地轴一周的自转，花费大约365天完成绕太阳一周的公转。
The solar wind, which carries the particles from the sun's magnetic field, known as the interplanetary magnetic field, takes about three or four days to reach the Earth.
太阳风将粒子从太阳的磁场，也就是我们通常所说的行星际磁场中带出，经过三至四天的时间到达地球。
For follow-on human operations, the proximity of the Moon to the Earth will allow astronauts to return to the Earth in three days in the event of emergencies.
在后继的开发试验中，由于月球到地球间距离很近，所以一旦发生意外，宇航员可以在三天之内返回地球。
(It takes about 365 days for the earth to make a complete revolution around the sun.) In contrast, the moon takes 29 days or so to make a complete cycle around the earth.
(地球绕太阳公转一周约365天)，对比起来，月球约用29天左右绕地球一周。
They say they have strong evidence for another planet in the same system that has about eight times the mass of the Earth and orbits every 84 days.
他们说他们有足够证据证明在同样系统内还有一个行星，体积为地球的8倍，运转周期为84天。
It took the Moon only twenty days to circle the Earth, and Earth's day was only eighteen hours long.
月球绕行地球一周只需二十天，地球的一天也只有十八小时长。
The Chilean quake of 1960 shook the entire Earth for many days, a phenomenon called oscillation that was measured by seismic stations around the planet.
1960年的智力地震让地球持续震动了若干天。持续的震动被各地的地震观测站测量到。
They will orbit together for 12 days before the Shenzhou 8 returns to earth.
他们将一起在轨道运行12天，之后“神舟8号”将返回地面。
The book of Daniel states that in the last days people will be moving to and fro throughout the earth.
《但以理书》所陈述的在末日时人们将往返的在全地上迁移。
For forty days the flood kept coming on the earth, and as the waters increased they lifted the ark high above the earth.
洪水汜滥在地上四十天，水往上长，把方舟从地上漂起。
Unlike on earth, with its cycle of nights and days and where there can be clouds, sunshine in space is practically constant - aside from a few days around the spring and autumn equinoxes.
不像在地球上，有日夜交替，有云遮雾绕，太空中的阳光几乎永恒不变——除了在春分秋分的那几天之外。
For yet seven days, and I will cause it to rain upon the earth forty days and forty nights; and every living substance that I have made will I destroy from off the face of the earth.
因为再过七天，我要降雨在地上四十昼夜，把我所造的各种活物，都从地上除灭。
The team also said they found a planet 7.5 times the mass of Earth orbiting the star HD 181433 in 9.5 days.
该小组还说他们发现了一颗质量是地球的7.5倍的行星，以9.5天为一个公转周期，绕着HD 181433号恒星转动。
The team also said they found a planet 7.5 times the mass of Earth orbiting the star HD 181433 in 9.5 days.
该小组还说他们发现了一颗质量是地球的7.5倍的行星，以9.5天为一个公转周期，绕着HD 181433号恒星转动。
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