关于这张图
JSC2011-E-054047 (13 June 2011) --- NASA astronaut Sandy Magnus, STS-135 mission specialist, gets help donning a training version of her Extravehicular Mobility Unit (EMU) spacesuit in preparation for a spacewalk training session in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. Photo credit: NASA
