581

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1.
Standing near the bank of Yellow River, the stork tower was originally built in the Northern Zhou Dynasty for military purposes.
耸立在黄河边的鹳雀楼，原是北周年代（557-581）为军事目的而建造。
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2.
One of Gliese 581's planets, planet D, could be one of these "eccentric impostors, " hiding an extra planet within its signal.
葛利斯581的一颗行星——行星D——就有可能是这样的一个假冒者，它的信号可能就隐藏了另外一颗行星。
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3.
The Gliese 581 star has about 30% the mass of our sun, and the outermost planet is closer to its star than we are to the sun.
红矮星Gliese581只有太阳质量的30%，比起太阳系的外层行星，该系统最外层的行星距离红矮星要更近。
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4.
Electrotechnical vocabulary. Chapter 581 : electromechanical components for electronic equipment.
电工技术词汇.第581章：电子设备用电机件
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5.
But Butler has no direct evidence that Gliese 581-g actually has water.
但巴特勒目前还没有获得任何证明这个行星上存在水的直接证据。
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6.
Another passion is Community Bible Study, an international nonprofit organization with 581 classes in the U. S. and five in Kentucky.
另外一个爱好就是社区的圣经学习活动，这是一个在美国拥有581个学习班，在肯塔基州有5个班的非盈利性国际组织。
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7.
Scientists caution that just because Gliese 581 g is the right temperature to hold liquid water doesn't mean that it has any.
科学家们警告说，不要仅因为Gliese581g上有适宜温度储存水分，就能证明它有水存在。
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8.
Like the solar system, the planets orbiting Gliese 581 have mostly circular orbits.
和太阳系一样，围绕着Gliese581运行的行星轨道大部分都是圆形的。
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9.
It was a different story for China with the formation of the Sui Dynasty in AD 581, which once again reunited China in AD 589.
而此时对于中国就是一段不同的历史了：公元581年隋朝建立，它在公元589年重新统一了中国。
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10.
When it was announced last September, Gliese 581g was heralded as the first known planet that could harbor alien life.
去年九月份宣布发现它时，大家把葛利斯581视作第一颗可能孕育生命的星球。
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