常見例句用作名詞 (n.)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(xù)兩次通過近日點之間的時間。 返回 perihelion