最近，前往国际空间站的美国发现号航天飞机成功地进行了3次太空行走，修复了航天飞机外部隔热层的故障，更换了国际空间站有问题的陀螺仪。自1965年人类第一次实现太空行走以来，宇航员们已经在太空中完成了100多次行走，在太空舱外散步、做实验以及修理太空舱外壳对他们来说 Recently, the U.S. space shuttle Discovery on its way to the International Space Station successfully conducted three spacewalks, repaired the outer insulation of the space shuttle and replaced the problematic gyroscope at the International Space Station. Since humans first made their spacewalk in 1965, astronauts have completed more than 100 walks in space, walking outside the capsule, experimenting and repairing the capsule shell to them