载人航天,是20世纪彪炳史册的重大事件。从世界上首次载人太空飞行,至今还仅有俄罗斯(包括前苏联)、美国拥有载人航天工具。它们先后建造的宇宙飞船、空间站和航天飞机,截至1998年6月,已把691人次的航天员送上太空遨游,并开展了各种前所未有的空间实验活动。 Manned space flight, is a remarkable event in the history of the 20th century. From the world’s first manned space flight, so far only Russia (including the former Soviet Union), the United States own manned spacecraft. Their spacecraft, space station and space shuttle were successively built. As of June 1998, 691 astronauts have been put on space trips and have carried out unprecedented space experiments.