aphelion

为了记住“aphelion”，可以将其拆分为两部分：“a”和“phelion”。这里，“a”可以提醒你这个词通常用于负面的语境，而“phelion”可以联想到“hello”或“helicopter”（直升机）。想象一颗行星在到达其轨道上的最远点时像是在发出一个“hello”或像直升机那样高高在上。这样，当你说到“aphelion”时，就能想到这是指行星轨道上的远日点。

aphelion (n.)

"point farthest from the sun" (of a celestial body's orbit), 1670s, a Grecianized form of Modern Latin aphelium, altered by Johannes Kepler based on Greek apo heliou "away from the sun," from apo "away from" (see apo-) + heliou, genitive of helios "sun" (see sol). The whole was formed on the model of Ptolemaic apogaeum (see apogee) to reflect the new helio-centric model of the universe.