• 1. tropical year: 回归年 | 分至年
• 2. mean tropical year: 平回归年
• 3. a tropical year: 回归年

更多释义

• 1.Tropical year, and sidereal year are two different concepts.
  回归年与恒星年是不同的两个概念。
  dict.yoduao.com
• 2.Tropical year , and sidereal year are two different concepts .
  在即回归年与恒星年是不同的两个概念。
  dict.yoduao.com
• 3.The Julian calendar approximated the mean tropical year as 365.25 days and proposed 366-day leap years for every one divisible by four.
  儒略历将太阳年划为365.25天，闰年366天，每四年一次。
  dict.yoduao.com

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