As it stands, battery cars that run on electricity from burning coal can be more polluting than cars that get good mileage on gas.

正的那样，电动车从烧煤变为用电驱动，可是会比燃气行驶很多公里数的车造成的污染更多。

When the snow melted on the Wasatch Mountain, the water made its way through the earth to a depth of 3 kilometers, where it warmed up due to volcanic activity, and then returned to the surface of the earth.

瓦扎茨山上的积雪融化以后，雪水流入地球内部三公里深的地方，由于那里的火山活动，雪水变暖起来，之后，它又回地球表面。

Think of a 14-story building moving faster than a kilometer per second.

想象一下一个14层的高楼时速每秒1公里移动的情景。

They are a technological leap, transporting iron ore along routes which run for hundreds of kilometers from mines to their destinations.

这是一种技术上的飞跃，沿着从矿区目的地的数百公里的路线运输铁矿石。

But on a 4,000 kilometer journey through the worst hit areas, we found innocent people close to death by a rebel Houthi government that's manipulating aid while U.N. officials try to stop them.

在穿越受灾最严重地区的4000公里旅程中，在联合国官员试图阻止胡塞政府操纵援助的同时，我们发现无辜的人们濒临死亡。

He lived in Chislehurst which is about 15 kilometers south of Greenwich and Willet was a keen horse rider and he used to go for early morning rides in the local woods.

他住在格林威治以南大约15公里的奇斯尔赫斯特，Willet是一个喜欢骑马的人，他经常在清晨当地的树林里骑马。

And it can run at speeds of up to 160 kilometers per hour.

它最快可以每小时160公里的速度运行。

Now imagine breaking that barrier 31 times in a row and you have a good sense of what it takes to be a champion at a 50 kilometer or 31 mile race.

现在想象一下，连续31次做上述要求，这样你就能很好地了解在50公里或31英里的比赛中成为冠军需要做。

Using sonar equipment and autonomous underwater vehicles, they navigated trenches, volcanoes and underwater mountains, searching for a debris field up to six kilometers below the surface.

使用声纳设备和自主水下航行器，他们在海沟，火山和水下山脉上航行，寻找在地表以下六公里处的残骸区域。

The railway remains the central feature and there's now 1. 2 kilometres of the line laid but we'd like to lay more.

铁路仍然是主要的特色，现在有1.2公里的线路，是我们想要拓展更多。

For example, from Toronto to Vancouver I think it's about 4,900 kilometres.

例，从多伦多温哥华，我认为大概有4900公里的距离。

So that really makes it that more susceptible here to causing a lot of damage, a lot of lives lost potentially and of course, notice some 700 rivers and tributaries across this region,some 24,000 kilometers of waterways.

所以这更易使当地受损失，很多人可能会因此丧生，当然，请注意这一地区约有700条河流及支流，约2.4万公里的水路。

The company had a successful test in February sending its crude spaceship II, 88 kilometers above Earth, the company's second time to space.

今年2月，该公司成功试射了一艘距地球88公里的原油II号飞船，这是该公司第二次进入太空。

She is hundreds of kilometres away near the Texas-Mexico border.

她在数百公里外的得克萨斯-墨西哥边境附近。

And then there's a a 10K in your eyes and you're like, wait and I gotta wear the boots and there's a 10K, and they're like, " And action! "

然后你的眼睛里闪过一个10公里的念头，等等，我还得穿上靴子然后跑10公里，然后他们直接说，“开拍！”

That's right. And it isn't far from the beach, either - only 300 metres, and only around half a kilometre to some shops, so you don't have to be too energetic.

没错。它离海滩不远，只有300米的距离，离一些商店只有半公里左右的路程，所以你不会消耗很多体力。

I'm runing in a ten kilometer race this coming weekend.

这个周末我要参加10公里的长跑比赛。

In total, there are more than 700km of shelves, and most of them are stacked up here, in one of the colossal low-oxygen storage buildings in Boston Spa in Yorkshire.

总共有超过 700 公里长的书架，它们大多数都被置于约克郡波士顿，温泉镇一座的低氧储藏设施中。

The 170 kilometer long path crosses the land of the Marsa .

这条170公里长的小路穿过马尔萨。

Nasa successfully smashes spacecraft into asteroid 11 million km from Earth.

美国国家航空航天局成功将航天器撞向距离地球 1100 万公里的小行星。