英语词汇astronomical year怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

n.
- 1
  the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
  同义词：solar year??/??tropical year??/??equinoctial year

1
It assures that the astronomical cycles have been in existence for billions of years.
这使人们确信天文周期已经存在了数十亿年。
2
That means that our nearest neighbours are perhaps 100 light years away, which is almost next door in astronomical terms.
那意味着我们最近的邻居星球离我们大约有100光年远，从天文学的角度来说，这几乎是一墙之隔。
3
For astronomical calculations, days are specified as the number of days from a reference point — you don't need to identify years, months, or weeks.
对于天文的计算，天被指定为从一个参照点开始的天的数量——不必识别年、月或者星期。

单词	astronomical year
释义	astronomical year 简明释义天文年；回归年英英释义 n. 1 the time for the earth to make one revolution around the sun, measured between two vernal equinoxes 同义词：solar year??/??tropical year??/??equinoctial year 双语例句 1 It assures that the astronomical cycles have been in existence for billions of years. 这使人们确信天文周期已经存在了数十亿年。 2 That means that our nearest neighbours are perhaps 100 light years away, which is almost next door in astronomical terms. 那意味着我们最近的邻居星球离我们大约有100光年远，从天文学的角度来说，这几乎是一墙之隔。 3 For astronomical calculations, days are specified as the number of days from a reference point — you don't need to identify years, months, or weeks. 对于天文的计算，天被指定为从一个参照点开始的天的数量——不必识别年、月或者星期。
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