1、The Q is - do you mean Pluto in its aphelion or perihelion ?
我的問題是，冥王星此時(shí)是在近地點(diǎn)還是遠(yuǎn)地點(diǎn)？

2、A comet is at perihelion when it is closest (=very close) to the sun.
彗星最接近太陽時(shí)，它就是在近日點(diǎn)。

3、A comet is at perihelion when it is closest (=very close) to the sun
彗星最接近太陽時(shí)，它就是在近日點(diǎn)。

perihelion翻譯