Aphelion is the farthest orbital point from the sun and perihelion is the closest.

Aphelion（远日点）是离太阳最远轨道点，而Perihelion（日点）是指最。

The most distant point is known as aphelion and occurs around the 4th of July.

最远点被称为“远日点”，大约出现在7月4日。

However, its motion around the Sun is faster at perihelion than aphelion.

然而，它在日点比在远日点时公转快。

Meanwhile, it's at its slowest in early July, at its furthest point from the Sun, or aphelion.

同时，它在 7 月初最慢，在离太阳最远点，或远日点。

At aphelion, Mercury's spin is a bit faster than its orbital speed, so the Sun moves rapidly westward across the sky.

于是在远日点时，水转速度会比它公转速度稍快一点，所以太阳会在天空中快速地向西移动。

The motion of Newton's comet at aphelion may be equally slight.

牛顿彗在远日点运动可能同样轻微。

He also figured out the planet goes faster when it's at perihelion, nearer the sun, than when it's at aphelion, its furthest distance.

他还算出这个行在距离太阳最日点比在距离太阳最远远日点时运动速度快。

The tides from the Sun are far stronger on Mercury when it's at perihelion, the closest point in its orbit to the Sun, than when it's at aphelion, the farthest point in its orbit.

在日点，也就是水与太阳距离最处，它受到来太阳引潮力比在远日点(水轨道上离太阳最远点)时要强烈得多。

Tracing the Winchcombe meteorite's path from the pictures taken of its arrival showed its orbital aphelion (the point in that orbit farthest from the Sun) to be just inside the orbit of Jupiter.

从 Winchcombe 陨石到达时拍摄照片追踪它路径显示它轨道远日点（该轨道中离太阳最远点）正好在木轨道内。

The corresponding change in gravitational force causes the Earth to move fastest in January when it reaches its closest point to the Sun, the perihelion, and the slowest in July when it reaches its farthest point, the aphelion.

相应地球引力变化使地球在一月时公转快，也就是到达离太阳最点时，这个点被称作“日点”，到达离太阳最远点时，公转最慢，这个点也被称作“远日点”。