关于这张图
JSC2011-E-054032 (13 June 2011) --- NASA astronaut Sandy Magnus, STS-135 mission specialist, attired in a training version of her Extravehicular Mobility Unit (EMU) spacesuit, prepares for a spacewalk training session in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. Astronaut Chris Ferguson, commander, assisted Magnus. Photo credit: NASA
