Sergei Krikalev is the director of crewed space programs at the Russian space corporation Roscosmos .
谢尔盖·克里卡列夫是俄罗斯联邦航天局载人航天项目的主管。
Russian Cosmonaut Sergei Krikalev says the older technology of the Soyuz is nothing to worry about .
俄罗斯宇航员克里卡列夫说，联盟号比较陈旧的技术没有什么值得担心的。
Sergei KrikalevSergei KrikalevSergei Krikalev