劍橋詞典an act of moving around in space outside a spacecraft but connected to it 太空行走，航天艙外活動 The crew are planning a four-hour spacewalk to carry out necessary repair work on the shuttle . 宇航員們打算進行4小時的太空行走，來執(zhí)行必要的飛船修理任務(wù)。 返回 spacewalk