perihelion
音标发音
- 英式音标 [ˌper.ɪˈhiː.li.ən]
- 美式音标 [-ə]
基本解释
- n.近日點；最高點
英汉例句
- A comet is at perihelion when it is closest to the sun.
彗星最接近太陽時，它就是在近日點。 - The anomalistic year is the time between successive transits of the Earth through the perihelion.
近點年是地球連續兩次通過近日點之間的時間。
用作名詞 (n.)
英英字典
- the point in an object's orbit (= a curved path in space around a planet or star) around the sun at which the object is closest to the sun