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A replica of the space shuttle is parked at the center's entrance.一架航天飞机的复制品停在该中心的入口处。NASA has used the space shuttle to study how materials perform in a weightless environment.美国国家航空航天局利用航天飞机研究物质在失重环境中的表现。The shuttle's launch has a window of only two days. 航天飞机的合适发射时机只有两天。The space shuttle Atlantis is scheduled to dock with Russia's Mir space station.亚特兰蒂斯号航天飞机计划与俄国和平号空间站对接。The space shuttle is being used more and more for commercial purposes.航天飞机被越来越多地用于商业目的。The space shuttle has completed its second orbit.航天飞机已沿轨道绕了第二圈。A hydrogen leak forced NASA to ground the space shuttle.氢气泄漏迫使美国国家航空航天局停止了航天飞机的发射。More than 200 improvements, many of them major, were made in the design and fabrication of the shuttle.在航天飞机的设计及制造过程中，作了两百多项改进，其中很多是大的改动。It takes a shuttle crew around a day to get used to the weightlessness of space.航天飞机机组人员要花一天左右才能习惯太空里的失重状态。The space shuttle returned safely to earth today.航天飞机今天安全返回地球。The Space Shuttle is now in orbit.航天飞机现在已进入轨道。The shuttle itself will glide back into the earth's atmosphere.航天飞机本身将滑回地球的大气层。The space shuttle crew conducted experiments on plants and cells in a special lab.航天飞机上的工作人员在一个特殊的实验室里对植物和细胞进行实验。The satellite was stowed in the shuttle's cargo bay for return to Earth.这颗卫星被收藏在航天飞机的货舱以返回地球。During the launch, two rockets boost the shuttle before separating and falling back into the sea.发射过程中，由两枚火箭推进航天飞机，然后分离，落进大海。They would ride a shuttle into space.他们将乘坐航天飞机进入太空。NASA has not yet named the date for the shuttle launch.美国国家航空航天局尚未确定航天飞机的发射日期。The space shuttle needs to be controlled precisely during reentry.航天飞机返航时需要精确控制。The shuttle was scheduled to dock with the space station.航天飞机计划与太空站对接。The countdown for the shuttle launch has already begun.航天飞机的发射已经开始倒计时了。The countdown has begun for the launch later today of the American space shuttle.美国航天飞机的发射已于今天晚些时候开始进入倒计时。The shuttle will re-enter Earth's atmosphere tomorrow.航天飞机明天将返回地球大气层。NASA has not yet set the date for the shuttle launch.美国国家航空和航天局尚未敲定此次航天飞机的发射日期。Spacecraft Columbia touched down yesterday.哥伦比亚号航天飞机昨天着陆。The space shuttle Atlantis returned safely to earth today. “亚特兰蒂斯”号航天飞机今天安全返回地球。NASA has stopped the countdown for the space shuttle mission because of technical problems.由于技术问题，美国国家航空航天局已经停止了发射航天飞机的倒计时准备。Thousand of spectators gathered to watch the liftoff of the space shuttle.成千上万的观众聚集在一起观看航天飞机发射升空。Thousands of spectators watched as the space shuttle lifted off.航天飞机发射升空时，成千上万的观众在场观看。The shuttle landed without a hitch at Edwards Air Force Base.航天飞机在爱德华兹空军基地顺利着陆。NASA has said mission control lost contact with the shuttle during its descent.美国国家航空航天局称，地面指挥中心在航天飞机降落过程中与其失去了联系。The space shuttle launch was on television stations from coast to coast. 全国电视台都播出了航天飞机的发射场景。The satellite acts as a drag on the shuttle.卫星成了航天飞机的累赘。The countdown has begun for the launch later today of the American space shuttle.美国航天飞机的发射已于今天晚些时候进入倒计数。The space shuttle has safely reentered the Earth's atmosphere.航天飞机已安全返回地球大气层。On this mission the Shuttle will orbit (the Earth) at a height of several hundred miles.此次任务中，这架航天飞机将在距地面数百英里的高空绕（地球）轨道运行。The space shuttle remained earthbound because of a technical fault.因为出现技术故障，航天飞机尚未能升空。 |