名词短语
中文翻译：在赤纬上的适当运动
同义词：
['proper motion', "proper motion in declination例句：1. The star's proper motion in declination is measured by its apparent position relative to the Earth's orbit.（这颗星的适当运动在赤纬上是通过其相对于地球轨道的相对位置来测量的。）"]
例句：
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1. The star's proper motion in declination is measured by its apparent position relative to the Earth's orbit.
这颗星的适当运动在赤纬上是通过其相对于地球轨道的相对位置来测量的。
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2. Astronomers use precise measurements of proper motion in declination to study the behavior of distant galaxies.
天文学家使用精确测量适当的运动在赤纬上，以研究遥远的星系的行为。
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3. This technique allows us to observe the proper motion in declination of celestial bodies with high precision.
这种方法允许我们以高精度观察天体在赤纬上的适当运动。