其轨道速度一定是在每秒几百米。Her orbital speed must be a few hundred meters per second.更为大型的卫星将被送入轨道。Yet bigger satellites will be sent up into orbit.这颗彗星的轨道与地球的轨道交叉。The orbit of this comet intersects the orbit of the Earth....
Computers are gradually overcoming such obstacles as the shortage of courseware and prohibitive school system budgets.计算机的使用正在逐步克服教学软件短缺,学校建立计算机系统资金有限等一些碍障.To explore how to make up multimedia courseware among medical pr...
Visitors are shown an audio-visual presen-tation before touring the cellars.参观酒窖前，游客们先观看了有声的视频介绍。As the buildings rocked under heavy shell-fire, he took refuge in the cellars.当一座座楼房在猛烈的炮火中颤动摇晃时，他躲进了地下室。Some families stoc...
Christians of all denominations attended the conference.基督教所有教派的人都出席了这次会议。The service was attended by Christians of all denominations.这次礼拜仪式各教派的基督徒都参加了.Carrie found her purse bursting with good green bills of comfortable...
地球既公转又自转.The earth revolves both round the sun and on its own axis.地球自转与地球绕日公转产生附加的频移.The earth's rotation and its motion around the sun add an appreciable frequency shift.月球的自转与公转精确地同步.In the case of the moon the r...
The walls on the outside were seamed with deep cracks which were a breeding - place for adders.墙外面深刻的裂缝是蝰蛇生息的场所.Or you can receive a pamphlet if you tell your adders.如果您留下地址的话,我们将寄一份本店的小册子给您.Full adders are discussed, an...