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这是最早出现的第三代载人飞船,经过多次更新换代,它是当代性能最稳定的载人飞船,并且成为眼下国际空间站的“生命线”,它就是前苏联／俄罗斯的“联盟”飞船。
It is the earliest third-generation manned spacecraft that has undergone many upgrades. It is the most stable manned spacecraft in the world and becomes the “lifeline” of the International Space Station. It is the “alliance” spacecraft of the former Soviet Union / Russia .