复数： cosmonauts

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Soviet cosmonaut yuri gagarin became the world 's first space traveler in 1961 .

苏联宇航员尤里加加林（yurigagarin）于1961年进入太空成为世界上首位太空旅行者。

Then others arrived , realizing he was the cosmonaut they had just heard about on the radio .

接着有其他人赶到，这才意识到他就是刚刚从广播中听到的那位宇航员。

I wandered out to the front of the station and spotted a bizarre silver statue of vvt ertvuntz , the first ( and only ) mongolian cosmonaut .

我漫步走出车站外面，看见了欧特冯兹（vvtertvuntz）有点古怪的银色雕像，他是第一个也是唯一的一个蒙古太空人。

The longest any human has stayed in space so far is about 13 months , held by a russian cosmonaut .

目前为止，人类在太空最长停留时间的纪录是13个月左右，由一名俄罗斯宇航员保持。

Fifty years have elapsed since soviet cosmonaut yuri gagarin lit the blue touchpaper on the era of manned spaceflight .

五十年前，苏联宇航员尤里加加林（yurigagarin）拉开了载人太空飞行时代的帷幕。