· =Electrooptical Alignment Unit 电光对准装置 · =Earth Orbital Flight 地球轨道飞行 · =End of Life 寿命终止(可靠性术语) ..
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马库斯所用的ICESat号卫星在沿地球轨道飞行，收集了7年的数据，已于2010年初退役。
The satellite Markus USES - ICESat - was retired in early 2010 after 7 years collecting data in Earth orbit.
马里兰州还接收从在地球轨道飞行的太空船发回的云图，研究在温暖海洋上空的那些先兆性气旋。
Cloud photographs from spacecraft orbiting the earth are received in Maryland and are studied for che telltale spiral on the warming sea.
研究学者认为，我们的月球是在一个巨大如火星的物体撞击地球时形成的，碰撞产生圆形的碎屑沿着地球轨道飞行。
Researchers believe that our moon was created when a giant object the size of Mars hit the early Earth, sending out a disc of debris orbiting our planet.
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