They use a distance called the parsec (a contraction of parallax and second), based on a universal measure called the stellar parallax and equivalent to 3.26 light-years.
他们用的距离单位是“秒差距”基于一种普遍使用的、名叫恒视差的量度方法，相当于3.26光年。
| 单词 | stellar parallaxes |
| 释义 |
stellar parallaxes
原声例句
万物简史 They use a distance called the parsec (a contraction of parallax and second), based on a universal measure called the stellar parallax and equivalent to 3.26 light-years. 他们用的距离单位是“秒差距”基于一种普遍使用的、名叫恒视差的量度方法，相当于3.26光年。 |
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