The 1984 Winter Olympic Games will not feature astronauts racing around the Earth in Space Shuttles.

1984年冬季奥运会并不是播送宇航员在航天飞机上绕地球竞赛的特写镜头。

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Similar machines have flown in space aboard NASA's shuttles, but they couldn't be tested for long enough to prove whether they were effective.

类似的机器也曾搭乘美国宇航局的航天飞机在太空中飞行，但无法进行时间足够长的测试来证明它们是否有效。

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In this book, he includes the loss of the space shuttles Challenger and Columbia, and the sinking of the Titanic.

在这本书中，他提到了挑战者号和哥伦比亚号航天飞机的失事以及泰坦尼克号的沉没。

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The agency has handed off rocket-building to private companies, retired it space shuttles in 2011 and now relies on Russian spaceships to transport American astronauts to and from the space station.

NPR: Space Station To Get $18 Million Balloon-Like Room

The report said that Nasa's space shuttles, designed in the 1970s, were not built to withstand bombardment by orbital debris because such objects were not then recognised as a substantial threat.

BBC: Was Columbia struck by space debris?

In 135 flights, as the five space shuttles collectively circled the Earth more than 20, 000 times, we learned about the physiology of humans in space and about the behavior of substances in near-weightless conditions.

CNN: Space is still the new frontier