Ruth listened and started nervously at every passing footstep.露丝谛听着,每次有脚步声过去她就心惊肉跳.I listened for a footstep.我留心听着脚步声.The store is just a footstep away.那爿店仅一步之遥....
The different kinds of quarks or leptons are known technically as flavors.夸克和轻子的这些个同种类,从技术上看是有特色的.At present nobody understands why these three quarks which are in the proton are bound together...目前还没有人知道质子里面的这三个夸克为什么会结合...
He has lots of original ideas about the research into microelectronics.他对微电子学的研究很有创见.It would be a natural evolution of microelectronics to become nanoelectronics.它是从微电子学到奈米电子学的自然演进.In control technology, greater use of ...