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tropical year是什么意思

tropical year

  近义词:solaryear,equinoctialyear,

英英释义

Noun
  1. the time for the earth to make one revolution around the sun, measured between two vernal equinoxes

例句

用作名词(n.)
  1. A tropical year is a measurement of time from one winter solstice to the next.回归年是指从一年冬至到下一年冬至的时间段。
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