Model Aya Kato displays the world's first blue roses at a media preview in Tokyo Wednesday, June 30, 2004. The blue roses, that had been thought impossible to create for years, was developed by Suntory and Australian bio venture FlorigenePty, Ltd., using biotechnology. Blue color pigment extracted from blue flowers was added to roses by recombinant DNA techniques. (AP Photo/Shizuo Kambayashi)

词汇：

biotechnology n.生物工艺学

pigment n.[生]色素，颜料

extract vt.拔出，榨取

recombinant [遗]重组[复合]器官，重组细胞