Space elevators are envisioned as a way to reach space without the risk and expense of rockets.

太空电梯的设想，以此来达到无风险和代价火箭空间。

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The public showing was the first concrete evidence of progress since the Rutan-designed SpaceShipOne became the first private, manned rocket to reach space in 2004.

本次（“白骑士2号”）的公开亮相成为自2004年鲁丹设计的“太空一号”成为第一艘进入太空的私营载人火箭之后（在太空旅游领域）取得的又一次具体进展。

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A major exception, the space shuttle orbiter, USES three onboard liquid-fuel main engines supplied by a disposable external tank and a pair of solid-fuel boosters to reach space.

一个主要的例外是航天飞机轨道飞行器，它使用三个随之携带的液体燃料的重要引擎到达宇宙，而这又是由一个可任意使用的外部箱和一对固体燃料后援器来供给的。

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The goal is to support a private space transportation industry that makes it easier and less costly to reach space.

VOA: special.2010.04.28

Five years ago,Mister Rutan's SpaceShipOne became the first private craft to reach space.

VOA: special.2009.12.18

But an explosion in space cost him the chance to reach the moon -- and nearly cost the crew their lives.

VOA: special.2010.04.28

Satellites are to get their own internet addresses as the WWW extends its reach into space.

BBC: Earth orbit gets wired

SpaceX's leader, however, is determined to reach the space station.

WSJ: SpaceX's Pioneering Flight Plans

When will the final diet-tracking product reach the space station?

FORBES: NASA Asks The 'Crowd' To Help Track What Astronauts Eat