sidereal year
短语n. 恒星年（等于365天6小时又10分钟）
词形变化
sidereal years
复数
sidereal years
释义与例句
n.
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1.
The orbital period of the Earth with respect to the fixed stars.
恒星年
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2.
The time it takes for any astronomical object in orbit around a central star to orbit that star, with respect to distant stars.