| 1. | Galactic nebulas are masses of diffuse material within our galaxy .
银河星云是我们星系中的一团团弥散物。
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| 2. | Astronomers usually assume that interstellar dust is closely confined to the galactic plane .
天文学家通常认为，恒星际星尘都是紧靠着银河平面的。
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| 3. | At the sides of the well the magnetic field lines are quite high and rise steeply above the galactic plane .
在井的四边，磁力线相当高，并急剧地升到银道面以上。
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| 4. | At the current epoch in galactic history, star formation appears to take place in dark-cloud complexes .
在星系发展的现阶段，恒星的形成看来是在暗云复合体内进行的。
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| 5. | The star to be moving rapidly, perhaps in an orbit around the densely concentrated stars of the galactic nucleus .
这颗星看来正在以高速运动着，其运动轨道大概就围绕着由高度密集的恒星所构成的银河系核心。
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| 6. | The galactic center is a rich and complex source of infrared radiation in which interesting phenomena occur in great variety .
银河系中心是一个红外辐射丰富和结构复杂的源，在那里发生着各种各样的有趣现象。
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| 7. | Some celestial bodies similar to galactic nebulas but without any luminosity sometimes reveal their presence as dark patches obscuring the light of stars beyond them .
某些与银河星云相似但不发光的天体，有时看来象块黑色补丁，遮住了周围的星光。
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| 8. | In the name of the galactic senate of the republic . .
以银河共和国参议院的名义
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| 9. | ( 4 ) observing the galactic plane periodically
（ 4 ）对银道面作周期性扫描观测。
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| 10. | And the president of the mid - galactic arts nobbling council
银河系艺术委员会的会长
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