1.【天】远日点
1.the point in the orbit of a planet, comet, or other astronomical object that is farthest from the Sun
1.Otherwise difficult to notice, the change in the Sun's apparent diameter between Perihelion and Aphelion is clear.
我们很难用肉眼看出近日点和远日点太阳视直径的变化，但在这张图上显而易见。
2.Slightly more solar energy is received when the Sun and Earth are closest (the perihelion) than when they are farthest apart (the aphelion).
太阳和地球的距离最近（近日点）时，所接收的太阳能要比距离最远（远日点）时接收的稍多一点。
3.But it's not that simple either, because the dates of the perihelion and aphelion are also shifting.
但这并不是简单的一件事情，因为近日点和远日点的日期都会变换。
4.perihelion, nearer the sun, than when it's at aphelion, its furthest
行星在离太阳很近的近日点飞行更快，在最远距离的远日点
5.axes less than 1. 0 AU and aphelion distances greater than 0. 983 AU;
半长轴小于1个天文单位，远日点大于0。983天文单位；