To lower cost in space transportation is one of the keys to the exploitation and exploration of space.

低成本空间运输是实现人类对太空探索和开发的重要关键之一。

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It used to be that commercial space transportation was almost exclusively about launching communication satellites into geosynchronous orbit using expendable launch vehicles.

过去，商业太空运输几乎专指用一次性运载火箭将通信卫星送入地球同步轨道。

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China will conduct research into the technologies for low-cost launch vehicles, new upper stage and the reusable space transportation system between the earth and low-earth orbit.

开展低成本运载火箭、新型上面级、天地往返可重复使用运输系统等技术研究。

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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

The idea is for NASA to buy services for space transportation, rather than spacecraft with existing designs.

VOA: special.2010.04.28

But safety is also key, advised George Nield, Associate Administrator for Commercial Space Transportation at the Federal Aviation Administration.

MSN: Suborbital spaceships spark scientific frenzy

"We want an environment that is conducive to testing, " says Patricia Grace Smith, associate administrator for FAA's Commercial Space Transportation division.

FORBES: Magazine Article

Single-sourcing space transportation capability will just result in a new monopoly and will evolve the same cost structure as the old.

BBC: SpaceX readies historic mission