tropical year meaning in English
【天文学】太阳年，回归年。
Examples
- During a tropical year the sun moves from vernal equinox to vernal equinox .
在一个回归年内，太阳从春分点转回到春分点。 - The tropical year is the interval between two transits of the mean sun through the mean equinox .
回归年是平太阳两次通过平春分点的时间间隔。