Researchers have made headway toward molecule-size transistors and wires. These laboratory feats make talk of sugar cube-size computers less speculative than it was a few years ago.

• 研究者们已经在研制分子大小的晶体管和线路方面取得了突破。多亏了这些在实验室里取得的成果,如今人们谈起方糖大小的电脑这个话题来,不会再像前几年那样完全局限于纯理论的层面。