Admittedly, with the intense Cold War rivalry between the Soviet Union and the United States, the glory of such achievements was somewhat diluted by the strong element of space competition between the two superpowers.

• 诚然，在苏联和美国剑拔弩张的冷战时期，这样的成就固然是载人航天发展技术谱写的乐章，但我们必须承认这样的乐章所带有的强烈太空竞争色彩影响了它的辉煌程度。