That's about how high an object would have to be orbiting straight up from the equator to constantly remain directly above the exact same spot on the rotating planet Earth.
这大约是一个物体从赤道沿轨道垂直向上运行的高度，这样它就可以一直保持在地球同一地点的正上方。
What on earth will he get up to next?
他下一步究竟要干什么？
Luna 16 landed on the lunar surface (in total darkness, no less), collected moon rocks, packed them up, and returned them to Earth.
“月球16号”降落在月球表面(完全是在黑暗中)，收集了月球岩石，打包，然后带回地球。
They bear a strong resemblance to river systems on Earth, and geologists think that they are dried-up beds of long-gone rivers.
它们与地球上的河流系统非常相似，地质学家认为它们是早已消失的河流留下的干涸的河床。
Then Houston, the control centre on the earth, called up and told me to use the tape to tape the bottom of the handrail and pull it off the telescope.
然后休斯顿，地球上的控制中心，打电话给我，让我用胶带把扶手的底部粘上，然后把它从望远镜上拉下来。
I like to smell the earth when it's turned up.
我喜欢闻泥土翻开后的味道。
She surprised him several times by seeming to start up beside him as if she sprang out of the earth.
有几次，玛丽让他吃了一惊，因为这小姑娘神不知鬼不觉地突然出现在他身边，仿佛是从地底下钻了出来。
Together, they can give light to an area of up to 6,400 square kilometers on the Earth for 24 hours.
它们合在一起可以给地球上高达6，400平方公里的区域提供24小时的照明。
On Earth, gravity helps a plant's stems and roots to find "up" and "down".
在地球上，重力有助于植物的茎“向上”生长，根“向下”生长。
Many people look up to Yuan Longping because he spent all his life working for people on the earth.
许多人敬仰袁隆平，因为他一生都在为地球上的人们而工作。
Afraid that in her unclear state of mind she might fall off the rock to her death, Grant climbed on all fours up a tight, narrow path by digging into the earth with his fingers and feet until he reached Paula.
担心她在神志不清的状态下会从岩石上掉下来摔死，格兰特手脚插入泥土，四肢并用地沿着一条狭窄的小路往上爬，一直爬到宝拉身边。
And because they had the courage to answer them, we’ve had the good fortune to grow up in the greatest nation on Earth.
因为他们有勇气去回答，我们手握着一个让这个全世界最伟大的国家变得更美好的机遇。
Your mission on earth was to make up for these former lives, to bring back love and justice to humanity.
你们在地球上的任务就是为以前的这些生世做补偿，给人类带回爱和正义。
Three decades ago, he helped create one of the world's first climate models to predict how the Earth would heat up in response to rising greenhouse gases.
在三十年以前，他帮忙建立了世界上最早之一的气候模型来预测地球对温室气体含量升高的加热效应。
The Japanese Spider Crab is the biggest arthropod on Earth — their legs are believed to grow up to 12 feet long.
日本的蟹型蜘蛛是地球上最大的节肢动物，它们的腿被认为能够长到12英尺长。
The idea is to create the world's best video service: from anywhere on earth, users can then use a standard protocol to pull up any video, at any time and on any screen.
这一想法将开创世界上最棒的视频服务：到那时候，在地球上任何角落，用户都能使用一种标准化协议来追看任何视频，无论何时，无论在哪个屏幕上。
One of those robotic devices, after maneuvering to a suitable location with guidance from Earth-based controllers, will use a mechanical arm to scoop up a sample of lunar soil.
那时，将有一种机器人设施，能够根据地球基站控制人员的指令寻找到适当的位置，用机器手攫取月球表面风化层泥土材料样本。
Some heat was coming to Earth but not leaving, and yet temperatures were not going up as much as projected.
有一些热量来到地球却没有离开，但是气温却未如预期般升高。
Not having to lie there and listen to all that maudlin drivel about how the earth shook freed me up to work on film scripts and develop new breakthrough concepts.
我再也不用躺在那儿，听那些感情脆弱的傻娘们胡扯什么地球是怎么抖动的，我可以全身心的投入电影剧本的创作，为大众创造一个又一个的观念突破。
Hawking's main concern was that a fleet of alien spacecraft could turn up wanting to strip mine the Earth for its bountiful resources.
霍金的主要忧虑是一队外星人飞船舰队可能会突然出现，想要将地球上储量丰富的矿藏洗劫一空。
They looked to the ocean for signals of climate change because the oceans absorb up to 90 percent of the heat that reaches Earth from the sun.
由于海洋可吸收高达90%来自太阳的热辐射，因此专家们将海洋的变化视为气候变化所发出的警报。
Despite this, the agencies put together a consortium to come up with a coordinated strategy for Earth observations, the United States Group on Earth observations.
尽管这样，这些机构组建一个意在为地球观测制定协调一致战略的组织——国家地球观测组。
And the elders of his house arose, and went to him, to raise him up from the earth: but he would not, neither did he eat bread with them.
他家中的老臣来到他旁边，要把他从地上扶起来，他却不肯起来，也不同他们吃饭。
We’re going to pay for it later as the rising cost of polluting our earth and heating up our climate comes to collect its toll.
为了治理地球上的环境污染和温室效应，我们将支付更多的后续成本，这些成本也许高昂得难以计算。
The mission was to attach a HD video camera to a weather balloon and send it up into the upper stratosphere to film the blackness beyond our earth.
这项任务是把一个HD高清摄像机系在一个太空探测气象气球上，放飞到同温层上面，拍摄地球外面的黑暗。
Current estimates suggest that half of all the living matter on Earth lives underground, at depths of up to 5km.
现在估计地球上大约一半的生物生活在地下深度约5千米以下的地方。
She used the whole senior class to help the lower school clean up the playground on Earth Day.
她曾在地球清洁日组织整个高年级班级帮助低年级打扫操场。
She used the whole senior class to help the lower school clean up the playground on Earth Day.
她曾在地球清洁日组织整个高年级班级帮助低年级打扫操场。
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