Nutrition Technology Studies
BERLIN, GERMANY - OCTOBER 13: A second semester student in the nutrition technology department seen here working on acid base volumetric analysis at the Beuth technical college on October 31, 2013 in Berlin, Germany. (Photo by Thomas Koehler/Photothek via Getty Images)
在 Photos.com 上購買這張圖片，更提供不同的相框選項。