A visitor wears a head mounted display watching an advertising film for German company Deutsche Telekom at the Cebit computer fair 2004 in Hanover, northern Germany, on Thursday, March 18, 2004. More than 6.000 exhibitors shows their newest products until Wednesday, March 24, 2004. (AP Photo/Christof Stache)

词汇：

wear vt.穿，戴

mount vt.装上，设置

exhibitor n.展出者