And when you fly a spacecraft repeatedly as opposed to chucking it after a single use, there's a lot of wear to repair.

不同于一次性使用的航天器，如果你打算重复使用航天器，会有许多的磨损需要修复。

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Although the Soviet Union initially led the space race, the first spacecraft to fly by a planet other than Earth was an American one, and the first man on the moon was also an American.

尽管前苏联抢占了太空竞赛的先机，第一艘绕行星而不是地球飞行的太空船来自美国，第一位登月宇航员也是美国人。

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For asteroids too big for a robot to handle, a large spacecraft could fly near the object to act as a gravity tractor that deflects the asteroid's trajectory, sending it toward Earth.

如果行星对于机器人来说比较大的话，也可以使用一艘大型的宇宙飞船将行星拉离原有的轨道，而向着地球的方向前进。

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Helen Sharman was the first Briton in space in 1991, but she had to raise the money needed to fly on a Russian spacecraft herself.

BBC: Major Tim Peake says he is not too old to go into space

As a result Geostorms, which could be launched as soon as 2005, has a good chance of being the first spacecraft to fly using a solar sail.

ECONOMIST: Rockets are not the only way to travel through outer space

Scientists managed to salvage the mission by placing the spacecraft into a trajectory that let it fly by the asteroid and have another chance the following year.

BBC: Probe nears its rocky target