英:/'æp'hiːlɪən/ 美:/'æ'filɪən/
复数:aphelia
n. 远日点
When the orbit of a celestial body is an ellipse, the celestial body has only one aphelion.
当天体轨道为椭圆时，该天体仅有一个远日点。
Aphelion refers to the point at which planets, comets and other celestial bo***s are farthest from the sun in orbit.
远日点是指行星、彗星等天体在轨道上离太阳最远的点。
When the earth is at aphelion, it is summer in the Northern Hemisphere and winter in the Southern Hemisphere.
地球在远日点的时候，北半球为夏季，南半球为冬季。
A comet is at aphelion when it is farthest from the sun.
彗星离太阳最远时就是在它的远日点上。
The Q is - do you mean Pluto in its aphelion or perihelion ?
我的问题是，冥王星此时是在近地点还是远地点？
But it's not that ****** 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。
The point in the orbit nearest the sun is called perihelion, while the point farthest is called aphelion.
在轨道上最接近太阳的点被称为近日点，而最远离太阳的点被称为远日点。
W hen the Earth moves from perihelion to aphelion, its radiation belts are expansion, and aphelion to perihelion contraction.
当地球从远日点运动到近日点时，地球辐射带向内收缩。
aphelion 是天文学术语，表示行星、彗星等天体绕太阳公转轨道上离太阳最远的点。以下是综合多个权威来源的详细解释：
如需进一步了解天体力学或开普勒定律，可参考天文学教材或权威百科（如、）。
单词 "aphelion" 是一个名词，表示行星或彗星在其轨道上离太阳最远的点。
单词 "aphelion" 通常用于描述天文学中的行星或彗星轨道。它是一个技术性词汇，较少在日常口语中使用。
单词 "aphelion" 的词源来自于希腊语 "apo-" 和 "helios"，分别表示 "远离" 和 "太阳"。因此，aphelion 意为 "远离太阳"。
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