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1·The most complex engineering project ever attempted has created an enormous set of interlinked modules that orbits the planet at more than 27,000 kilometres per hour.

有史以来最为复杂的工程项目创造了一组巨大的相互连接的模块，其以每小时27000公里的速度绕地球运行。

2·We would fly at 480 kilometres per hour, avoiding traffic lights, busy roads and speeding tickets.

我们能以每小时480公里的速度飞行，避开红绿灯、拥挤的道路和超速罚款单。

3·They wait below the seals and then swim up and crash into them by surprise at 40 kilometres per hour, killing them with one bite.

它们在海豹下方等待，然后游上来，以每小时40公里的速度突然撞向海豹，一口就把海豹咬死。

4·The speed of the car was 85 kilometres per hour.

这汽车的速度是每小时85公里。

5·The aeroplane can go at 1200 kilometres per hour.

这飞机一个钟头能飞1200公里。

6·It did not fly very fast: only at 48 kilometres per hour.

迅速飞得不很多：只是在每个小时48公里。

7·Early trains, like the Rocket, had a top speed of 50 kilometres per hour.

早期的火车，像火箭，最快速度是每小时50公里。

8·There are violent winds of 120 kilometres per hour or more, which cause huge waves, heavy rain and floods.

猛烈的飓风以120千米每小时甚至更快的速度移动，引起巨大的波浪，大雨和洪水。

9·Even fragments a few centimetres in size are a hazard because they travel at many thousands of kilometres per hour.

即使仅有几厘米大小的碎片也是一场灾难，因为它们的速度可达每小时几千公里。

10·Even fragments a few centimetres in width are a hazard because they travel at many thousands of kilometres per hour.

即使仅有几厘米大小的碎片也是一场灾难，因为它们的速度可达每小时几千公里。