它将在300千米的高度绕地球运行。
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.
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?
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。
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.
巴林杰陨石坑的直径有1.2千米。
这个矿区有840米深，6.5千米长。
地球在轨道里的速度，约为30千米每秒。
The velocity of the Earth in orbit is about 30 kilometers per second.
书架总长度275千米。
而“伊斯坎德尔”的作战半径是500千米。
为什么是36千米？
原谅我弄混，米和千米，但你们当然得，转换成米。
Forgive me for mixing up meters with kilometers, but you have to convert that, of course, to meters.
雪线升高了150米，冰川也因此消退了10千米。
The snow line here has risen 150 meters, and glaciers have retreated by 10 kilometers.
美国长期将太空定义为开始于50英里【80千米】处。
The United States long defined space as beginning at 50 miles [80km].
它位于聂伯河岸边，距基辅水利发电站数千米。
You can find it on the bank of the Dnieper, several kilometers far from the Kiev Hydroelectric Power Station.
土卫十是土星小卫星之一，据测直径只有180千米左右。
Janus is one of Saturn's smaller moons and measures only about 180 kilometers across.
右下的光来自小村庄和西南100千米之外的首都德黑兰。
Lights at the lower right are from small villages and the capital Tehran, over 100 kilometers away to the southwest.
整座水库长400千米，宽15千米，深100米。
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.
一团堆起的云层达到了同温层海拔10到15千米处。
One towering cloud reached into the stratosphere between 10 and 15 kilometers in altitude.
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.
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.
之后，将点燃液态氧气-甲烷火箭将运输工具推至大概100千米高度。
It would then ignite a liquid oxygen-methane rocket to push the vehicle to about 100km.
10千米竞速跑训练好健身跑的差别是你的每次锻炼都有目标。
The difference between running for fitness and training for a 10K is that every workout has a purpose.
10千米竞速跑训练好健身跑的差别是你的每次锻炼都有目标。
The difference between running for fitness and training for a 10K is that every workout has a purpose.
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