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- Tropical year, and sidereal year are two different concepts. 回归年与恒星年是不同的两个概念。
- 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。
- 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。
- 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。
- The tropical year is a phenomenon of the precession of the equinoxes in astronomy. 太阳年是天文学里的岁差现象。
- Precession causes the stars to change their longitude slightly each year, so the sidereal year is longer than the tropical year. 基于这种动机下，国际天文联合会选择了最容易开发和利用的理论。
- He also distinguishes between tropical year and sidereal year, the first time the introduction of calendar precession, measured precession for 45 years, a time difference in November. 他还区分了回归年和恒星年，首次把岁差引进历法，测得岁差为45年11月差一度。
- Our firm is likely to reap a big profit this year. 今年我们公司很可能获得巨额利润。
- Xing Yunlu's Determination of the Length of Tropical Year Revisited 邢云路测算回归年长度问题之再研究
- Tropical plants abound in the jungle. 丛林中有大量的热带植物。
- These tropical flowers have bright colors. 这些热带花卉颜色很艳丽。
- The company declared a large dividend at the end of the year. 公司在年底宣布分发高额股息。
- Is Singapore a tropical country? 新加坡是热带国家吗？
- The complete equipment of the new hospital will take a year. 新医院的全部设备需要一年才能装备好。
- The grain crop has gone down this year. 今年的粮食作物产量下降了。
- Escape with us to the tropical island of barbados. 与我们一同到巴巴多斯的热带岛屿上消遣。
- New Year's Day is a day for family reunion. 元旦是一个亲属团聚的日子。
- Most tropical areas have rainy and dry seasons. 大多数热带地区有雨季和旱季。
- I'm under contract to teach here for one year. 我按照聘约要在这里教一年书。
- They inhabit the tropical forests. 他们居住在热带森林中。
