关于这张图
iss059e005255 (March 29, 2019) --- Spacewalkers and NASA astronauts Christina Koch (center top) and Nick Hague (suit with red stripe on legs) swap batteries and install adapter plates on the International Space Station's Port-4 truss structure. The duo worked outside in the vacuum of space for six hours and 45 minutes to continue upgrading the orbital complex's power storage capacity.
