aphelion

Aphelion的音标是["æfɪlɪən]，基本翻译是远日点。记忆技巧可以是：阿非利肯的远日点（谐音：阿非利肯远日盘）。

Aphelion:

词源：希腊语“aphelio”，意为“远离”。

变化形式：复数形式“aphelions”，过去式“aphelia”和“aphelion”，现在分词“aphelionic”。

相关单词：

1. Ecliptic：黄道

2. Heliacal rising：日食前的曙光，日食先驱

3. Heliocentric：以太阳为中心的

4. Apogee：远地点，最远点

5. Perigee：近地点，最近点

6. Parallax：视差

7. Apside：轨道的某一边

8. Apoapsis：轨道的远地点

9. Epoch：时期，时代

10. Aphelion distance：远日点距离，近日点与远日点之间的距离。

在古代，人们认为太阳和月亮的运动是神灵的体现，因此这些天文学概念具有深厚的文化背景和象征意义。同时，这些词汇也反映了人类对宇宙的探索和理解的进步。

常用短语：

1. aphelion - 远日点

2. perihelion - 近日点

3. solar system - 太阳系

4. planetary motion - 行星运动

5. orbital velocity - 轨道速度

6. gravitational pull - 万有引力

7. eccentricity - 离心率

双语例句：

1. The aphelion of a planet is the point in its orbit where it is farthest from the sun. (英语)

2. The planet"s perihelion is the point in its orbit where it is closest to the sun. (汉语)

3. The solar system"s planets all move in elliptical orbits, with the aphelion and perihelion gradually changing over time. (日语)

4. The orbital velocity of a planet at its aphelion is the highest, while at its perihelion it slows down. (法语)

5. Gravity between the planets affects their motion, causing them to follow elliptical orbits with varying eccentricities. (德语)

6. The eccentricity of an orbit determines how close or how far a planet gets to the sun during its perihelion and aphelion. (西班牙语)

7. The sun"s gravitational pull affects all the planets in the solar system, causing them to move in harmony with one another. (意大利语)

英文小作文：

Aphelion and Perihelion: The Mysteries of Planetary Motion

The motion of planets in our solar system is fascinating, and nowhere is this more apparent than when observing the positions of our planets during their journey around the sun. At their farthest point from the sun, or aphelion, planets travel through space at their fastest speed, and at their closest point to the sun, or perihelion, they slow down. This phenomenon is caused by the gravitational pull of the sun on each planet, causing them to follow elliptical orbits with varying eccentricities.

The eccentricity of an orbit determines how close or how far a planet gets to the sun during its journey around the sun. For example, when a planet passes closest to the sun, it experiences perihelion, where it receives the most heat and energy from the sun"s rays. Conversely, when a planet passes farthest from the sun, it experiences aphelion, where it receives less heat and energy. This creates interesting patterns in weather patterns and climate changes across our planet.

Understanding the relationship between aphelion and perihelion also sheds light on the dynamics of our solar system. Gravity between the planets affects their motion, causing them to move in harmony with one another. This interplay between celestial bodies creates beautiful patterns and patterns that are constantly changing as they move through space and time. In conclusion, aphelion and perihelion are essential concepts in understanding the motion of planets in our solar system, and they provide valuable insights into the mysteries of celestial mechanics.