spacewalk
noun [ C ] uk/ˈspeɪs.wɔːk/ us/ˈspeɪs.wɑːk/
太空行走，航天舱外活动
an act of moving around in space outside a spacecraft but connected to it
The crew are planning a four-hour spacewalk to carry out necessary repair work on the shuttle. 宇航员们打算进行4小时的太空行走，来执行必要的飞船修理任务。