2015年12月21日,国际空间站上的两名美国航天员出舱进行了3小时16分的太空行走,对几天前被卡在该站桁架结构上与一个工作位置相距约10厘米处的机械臂移动运输器进行了修理。他们在将移动运输器松开后将其移至该工作位置,并进行锁定。俄罗斯当天发射的一艘“进步”号货运飞船在2015年12月23日要与空间站对接。为防止“进步”号 On 21 December 2015, two U.S. cosmonauts on board the ISS made a 3-hour, 16-minute space walk out of space and were caught a few days ago by a distance of about 10 cm from a working position in the truss structure of the station Manipulator mobile transporter was repaired. They move the transporter to the work position after it has been released and lock it. Russia launched a “Progress” cargo spacecraft on December 23, 2015 docking with the space station. To prevent “Progress ” sign