在位于华盛顿的美国海军天文台，这里最新的原子钟首次得到了一个拥有空调的专用房间。
At the US Naval Observatory in Washington, its newest atomic clock is getting a climate-controlled room of its own for the first time.
建模过程中，对岁差、章动等量的计算分别考虑了美国海军天文台1981年和2005年的两种天文标准。
In this modeling process, the precession, nutation and some other astronomical quantities are considered through two standards released by U. S. Naval Observatory in 1981 and 2005, respectively.
挨着英国大使馆的是美国海军天文台。天文学家用这个天文台研究地球，太阳，月亮和其他空间物体的位置和运动。
Close to the British Embassy is the United States Naval observatory. Astronomers use the observatory to study the positions and movements of the Earth, sun, moon and other objects in space.
挨着英国大使馆的是美国海军天文台。天文学家用这个天文台研究地球，太阳，月亮和其他空间物体的位置和运动。
Close to the British Embassy is the United States Naval observatory. Astronomers use the observatory to study the positions and movements of the Earth, sun, moon and other objects in space.
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