...people travelling backwards and forwards to and from London.往返于伦敦的人He stood a few moments, rocking back and forwards on his heels.他站了一会儿,踮着脚跟前后摇晃。She fell forwards on to her face...她一头栽倒在地。Space scientists and astrono...
Draw the floss backwards and forwards between the teeth.将牙线在齿间来回拉动。He controlled the car until it was pointing forwards again.他稳住车子,直到它又朝前开去。He stood a few moments, rocking back and forwards on his heels.他站了一会儿,踮着脚跟前后摇晃。...
Somehow he tells these stories without a note of horror.不知为什么他讲这些故事时一点都不害怕。She tells me her troubles. I tell her mine.我和她互相倾诉烦恼。The evidence of our eyes tells us a different story.我们亲眼所见的可不是那么一回事。...
开发了用于光电子器件对准的显微立体视觉系统.A kind of micro stereo vision system for photoelectron components alignment was developed.本文介绍了 单模光纤 熔接机 三维 自动对准原理,以及三维自动对准的实现方法.The paper described the 3 - D aligning theory of single - mode fiber ...