它将在300千米的高度绕地球运行。
卫星以11.2千米每秒的速度前进可以脱离地球引力，这被称为“逃逸速度”。
Eleven point two kilometers per second, at which satellites can be freed from the gravitation of the earth, is called "escape speed".
如果车速限制是100千米每小时，生产一个足够大、足够强、时速能达到每小时200公里的引擎有什么意义呢？
What's the point in producing an engine that is big and powerful enough to go like 200 kilometers an hour when the speed limit is only 100?
带负电荷的区域非常大：数百米厚，直径达几千米。
The negatively charged region is large: several hundred meters thick and several kilometers in diameter.
丰田公司说他们的燃料电池汽车FCHV-adv 装满一箱氢气能行驶820千米，但在2016年前可能不会投入量产。
Toyota says its fuel cell car FCHV-adv can travel 515 miles on a full tank of hydrogen, but it may not see mass production until 2016.
我们有近10千米高的山和数千米深的山谷。
We have mountains nearly ten kilometers high and valleys many kilometers deep.
这些海底峡谷的深度可达11千米。
我第一次散步的路程是2千米远。
它于1972年建造完成，坐落在距克拉茨诺雅茨克市40千米的地方。
It is located 40 km away from Krasnoyarsk city and was built in 1972.
这条线路上火车的最高运行速度是300千米每小时(186英里每小时)。
The top operational speed for the line's trains is 300 kilometers per hour (186 MPH).
而“伊斯坎德尔”的作战半径是500千米。
这座水库可以存储大约157立方千米(合37.5立方英里)的淡水。
The lake is capable of storing some 157 cubic kilometers (37.5 cubic miles) of fresh water.
高能粒子激发100千米或更高处的氧原子，产生特有的绿色光辉。
To produce the characteristic greenish glow, the energetic particles excite oxygen atoms at altitudes of 100 kilometers or more.
飓风/台风是指风速至少达到33米/秒（119千米/时）的风暴系统。
A hurricane or typhoon is a system with sustained winds of at least 33 metres per second(119 km/h).
巴林杰陨石坑的直径有1.2千米。
这个系统普遍的射程大概在1千米左右。
后来，他和他的妻子参加了5千米的比赛。
尽管它发生在10千米和5千米的比赛中，但我今天仍有那样的感觉。
I still get that feeling today, but it happens in the 10k and 5k RACES.
为了狩猎的需要，这种鸟类的每平方千米种群密度必须超过200只。
For shooting to go ahead, the density of birds must exceed 200 grouse per square kilometre.
这使马耳他成为欧洲人口密度最高的国家，每平方千米1,265人。
This makes Malta the European country with the highest population density with 1,265 persons per square km.
而航行者1号是速度最快的，正以约每秒17千米的速度脱离太阳系。
Voyager 1 is moving the fastest though, escaping the solar system at about 17 kilometers per second.
熔岩顺着山体陡峭的一面以每小时100千米的速度迅速流泻出熔岩湖。
Runny lava flowed down its steep sides at rates of nearly 100 km per hour, quickly draining the lake.
但是，在数千米高处发现嗡嗡叫的苍蝇实在令人震惊。
But finding a fly buzzing thousands of metres up is horrifying.
在周边地区像这样的露天煤矿总共有约3，000平方千米，而周边的地下煤矿则有约35，000平方千米。
Open-cast mines like this are planned for some 3,000 square kilometres of the surrounding area, and subterranean ones beneath a further 35,000 square kilometres.
如果你每次5千米成绩都一样，那也许你需要一些更快的练习。
If you have the same 5k time every time, it may be that you need some faster workouts.
通过这条接近10千米长0.5千米宽遭到破坏的范围可以看到这次龙卷风的路径。
The tornado's progress can be seen in a swathe of destruction nearly 10km long and 0.5km wide.
这些粒状斑的平均直径为1000千米，由太阳内部上升的高温气体组成。
On an average size of 1000 km, these cells are made of hot gas rising from inside the Sun.
这些粒状斑的平均直径为1000千米，由太阳内部上升的高温气体组成。
On an average size of 1000 km, these cells are made of hot gas rising from inside the Sun.
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