n.回归年 newtropical year的英文翻译是什么意思,词典释义与在线翻译:参考翻译太阳年英英释义Noun:the time for the earth to make one revolution around the sun, measured between two vernal equinoxes tropical year的用法和样例:例句用作名词(n.)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。