最好让转子自由旋转.It is best to allow the rotor to rotate freely.克里斯·雷茨勒已制造出了一种叫波转子的机器的样机。Chris Retzler has built a prototype of a machine called the wave rotor.转子在其凸角之间的三个面上有凹槽.The rotor has recesses in its three faces between ...
她还没来得及按门铃，门就开了。The door was opened before she could ring the bell.他跳着上了台阶，按下了门铃。He bounded up the steps and pushed the bell of the door.随着门铃叮当作响，埃米醒来了。Amy woke up to the sound of her doorbell ringing....
See how many cups and saucers we have - but don't count in the cracked ones.看我们有多少个杯碟― ― 可是不要把破裂的算在内.everyday objects such as cups and saucers诸如杯碟之类的日用品He placed cups and saucers on the table.他把杯子和茶碟放到桌上.... a boxed...