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。
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。
We are telling you the time that passes in an Earth year will be the same, however distributed.
我们想说的是一个地球年还是一样的，无论怎样分布。
The craft, known as MESSENGER, began the orbit around 9:00 p.m. (0200 GMT) on a mission to circle the planet for one Earth year in an unprecedented study of the tiny, hot planet.
名为“信使”号的该航天器于晚上9点(格林威治标准时间凌晨2点)进入水星轨道，并在此后为期1地球年的时间内，环绕这个细小炎热行星进行史上第一次的研究。
Changes in eccentricity, tilt and wobble do not affect the total amount of solar radiation Earth receives in a year.
离心率、倾斜和摆动的变化并不影响地球一年接收到的太阳辐射总量。
When Earth's orbit is more elliptical, Earth is actually closer to the sun during part of the year.
当地球的轨道更接近椭圆时，地球实际上在一年的一部分时间里更接近太阳。
That's nearly two and a half times around Earth! For the first time, Coca Cola has shown that it uses 3,000,000 tons of plastic bottles each year.
这差不多是地球的2.5倍！这是第一次可口可乐公司表示它每年使用300万吨塑料瓶。
I hear Chang'e-5 brought some samples from the Moon to the Earth last year.
我听说去年嫦娥五号从月球带回了一些样本到地球。
This year is the 49th Earth Day and I think we should call on people not to cut down too many trees.
今年是第49个地球日，我认为我们应该呼吁人们不要过度砍伐树木。
Starting 2,000 years ago, Chinese farmers flew kites to welcome the New Year and bring good luck to earth.
2000年前开始，中国农民放风筝来迎接新年，以求给土地带来好运。
Tiangong Ⅰ, China's first space lab, returned to the earth after finishing its job on April 2 this year.
天宫一号，中国首个太空实验室，在今年4月2日完成任务后返回地球。
The Wandering Earth, a Chinese film, has become one of the most popular films this year.
中国电影《流浪地球》，成为今年最受欢迎的电影之一。
They would rise up from the earth and many other animals would also make their first appearance of the year.
它们会冒地而出，许多其他的动物也会在这一年里首次出现。
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。
To the right there's a drawing of Earth orbiting the Sun, with an arrow pointing to the right. The arrow means one year, the time of it takes the Earth to rotate around the Sun.
一个箭头指向球体右方，那儿有一个地球围绕太阳旋转的图样，这个箭头意味着一年，暗示地球围绕太阳旋转一圈的时间。
The sun makes this shape over a year because Earth rotates on a slightly different axis than the sun, and our planet also travels on an elliptical orbit.
太阳一年内的轨迹形成这种形状是因为地球围绕着与太阳略微不同的轴旋转，而我们的地球也沿着椭圆形轨道运行。
The inaugural Earth Day happened a year later.
一年之后诞生了首个世界地球日。
This New year I will make a difference in saving the earth. This year I will contemplate on what is green and how I can make a smaller carbon footprint.
每年这时候，人们立下新年的决心，这个新年我将要在拯救地球方面有所作为，这一年我将琢磨绿色环保是什么，以及我如何能够造成一个更小的碳足迹。
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。
Last year during Earth Hour... we were able to save enough energy to remove more than 124, 000 pounds of carbon dioxide from the atmosphere.
去年地球一小时过程中……我们可以可以节约足够多的能源来从大气层中去除124,000磅的二氧化碳。
Each year when Earth Day rolls around, we're given an opportunity to reflect on how far we've come in protecting the health and the environment of our communities.
每年当世界地球日临近，我们就得到一个机会，可以反思我们在保护健康和社会环境方面做了多少工作。
Even though asteroids of roughly that size fall to Earth a few times a year, the NEO Program telescopes often miss them because the survey is tuned to search for larger, more distant rocks.
即使每年都有几颗类似体积的小行星飞临地球，近地天体项目的望远镜也时常观测不到，因为巡天望远镜是为寻找较大，较远的太空岩石。
Friends of the Earth was founded in the same year that man first walked on the Moon. The inaugural Earth Day happened a year later.
地球之友创立于人类首次漫步月球的那一年，首届地球日诞生于一年以后。
Isaac Newton, the man who invented a chunk of the math that our kids are being forced into at school, predicted that the earth would crumble in the year 2060.
艾萨克·牛顿发明了数学块，迫使孩子们进入学校学习，他预测地球将于2060年崩溃。
The atoms recorded by IBEX, which orbits Earth, took a year or two, depending on their energies, to reach the craft from the outer edge of the heliosphere.
IBEX记录到的原子绕地球旋转，根据其自身能量不同，需要1到2年才能从日球层的边缘到达探测器的位置。
The following year, Earth Hour had become a global sustainability movement with more than 50 million people across 35 countries participating。
在2008年，“地球一小时”活动就成为了一项全球的环保运动。 当年有来自35个国家的超过五千万人参加。
The following year, Earth Hour had become a global sustainability movement with more than 50 million people across 35 countries participating。
在2008年，“地球一小时”活动就成为了一项全球的环保运动。 当年有来自35个国家的超过五千万人参加。
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