school student education boy girl kids cartoon standing students Students Standing Cartoon clip art 学生 常规 卡通 学生站卡通剪贴画
Bacterial operon model. More information here http://en.wikipedia.org/wiki/Operon 细菌 操纵子 基因 操纵子模型 (分子生物学)
An ergonome that I made for the pupils to use in product design and craft & design classes, hopefully others will get some use of it 人机工程学 技术 技术 Ergonomist
computer zazou internet munch student network satellite reading dvb voip Sallite clip art sallite 阅读 Dvb Voip 的计算机互联网 Zazou 芒奇学生网络卫星