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- The flyby shrunk the radius of MESSENGER'S orbit around the Sun to bring it closer to Mercury. 此次飞越收缩了信使号绕太阳运行的轨道，使它更接近水星。
- In the coming months, MRO's orbit will be circularized through repeated passages into Mars' outer atmosphere, a process known as aerobraking, shrinking its orbit to an altitude of only 280 kilometers. 在接下来的几个月里，MRO的轨道将重复经过火星的外大气层，这就是减速过程，它将轨道高度降低到只有280公里。
- Because the ISS's orbital plane is inclined and precesses, all spatial directions could be sampled. 因为ISS的轨道倾斜且具有进动，所有空间方向都能检测。
- Solar perturbation of the lunar orbit. 出差由于太阳引力引起的月球轨道运动的摄动
- ESA's orbiting X-ray observatory XMM-Newton has discovered the most massive cluster of galaxies seen in the distant Universe until now. ESA的XMM-牛顿轨道天文台发现宇宙深处迄今最重的星系群之一。
- The European Space Agency’s orbiting XMM-Newton observatory studied the black hole in the core of an active galaxy known only as 1H0707-495. 欧洲空间局在轨运行的XMM-牛顿天文台对名为1H0707-495的活跃星系核心中的黑洞进行了研究。
- A composite image of M51, also known as the Whirlpool Galaxy, shows the majesty of its structure in a dramatic new way through several of NASA's orbiting observatories. NASA的轨道天文台合成照片用一种戏剧性的新方式展现了M51（又名涡状星系）的宏伟结构。
- A lunar occultation of a quasar. 类星体的月星掩测定
- A month, especially a lunar month. 太阴月一个月，尤指阴历的月
- The farthest point on the lunar orbit is called apogee. 而绕月轨道里地球最远的点则为远地点。
- GDI's Orbital Strike sends down massive rods hurtling at ridiculous speeds, allowing it to do some moderate damage and is effective against structures and, if used well, against units as well. GDI的轨道突袭可以以荒谬的速度投射下大量金属棒，允许你可以对敌造成中等程度的伤害，并且可以有效的对抗建筑。
- A luminous spot on a lunar halo. 幻月，假月月晕上的光斑
- The astronauts piloted their craft down to the lunar surface. 宇航员驾驶宇宙飞船在月球表面降落。
- They spend the winter(s) in a warmer climate. 他们在气候较暖的地方过冬。
- Most plural nouns in English end in "s". 英语的复数名词多以“s”结尾。
- The sweater had shrunk after repeated washing(s). 这件套头毛衣洗过多次已缩水了。
- The booster was Saturn C-3 and the key technique was lunar orbit rendezvous. 采用萨杜恩C-3运载火箭，关键技术是月球轨道会合。
- Some old folk(s) have peculiar tastes. 有些老人有特殊的爱好。
- Answer the following question(s). 回答下列问题。
