perihelion
n. 近日点；最高点
形容词：perihelial 名词复数：perihelia
近义词：aphelion，
详细释义
n.(名词)
- 最高点
- 【天】近日点
- 极点
英英释义
Noun
- periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun
例句
用作名词(n.)
- A comet is at perihelion when it is closest to the sun.彗星最接近太阳时，它就是在近日点。
- The anomalistic year is the time between successive transits of the Earth through the perihelion.近点年是地球连续两次通过近日点之间的时间。