The long-term future of the space programme hangs in the balance.

航天计划的长远前景尚未明朗。

《牛津词典》

UK researchers found moving to a green space had a sustained positive effect, unlike pay rises or promotions, which only provided a short-term boost.

英国研究人员发现，搬迁至绿地能带来长期的积极影响，而不像加薪或升职，只提供了短期的促进作用。

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"And this," says Dr.Williams, "is good news for long-term space travel."

威廉姆斯博士说：“对于长期太空旅行来说，这是好消息。”

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But as he says, the search for life in outer space is a long-term goal, and he is still hopeful.

VOA: special.2010.05.25

And NASA is also being called on to develop new technologies to solve problems involved in long-term space flight for humans and robots.

VOA: special.2010.04.28

The American space agency gave Chilean officials information to help the miners survive long-term isolation.

VOA: special.2011.08.12

The Obama Administration has canceled plans it inherited to send astronauts back to the Moon, the Space Shuttle is about to retire, and the only near-term human space flight initiative on the books is a handout to rich California businessmen to update old technology.

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Usachev has experience dealing with the consequences of a long-term stay in space, having spent two long-duration missions on the retired Russian space station Mir.

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Co-author Dr Benjamin Blaiszik, now at Argonne National Laboratory, explained that the self-healing circuitry could find uses in a military setting where it would be exposed to extreme stresses or in long-term space applications.

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