noun🔗Share远点，拱点 Apsis"The Earth's orbit is not a perfect circle, so the distance to the sun changes, reaching its apsides – the closest (perihelion) and farthest (aphelion) points – at different times of the year. "地球的轨道不是完美的圆形，所以地球与太阳的距离会发生变化，在一年中的不同时间到达它的远点，也就是拱点——最近点（近日点）和最远点（远日点）。astronomyphysicsspaceChat with AIVocabulary GamePractice Reading
noun🔗Share后殿，半圆室。 A recess or projection, with a dome or vault, at the east end of a church; an apse."The architect pointed out the apsides at the east end of the cathedral, noting their beautiful vaulted ceilings. "建筑师指着大教堂东端的后殿，特别指出那里美丽的拱形天花板。architecturereligionbuildingChat with AIVocabulary GamePractice Reading
noun🔗Share近日点或远日点 Either of the points in the elliptical orbit of a planet or comet where it is closest or furthest from the sun; perihelion or aphelion; an apside"The satellite's apsides shifted slightly each orbit, meaning its closest and furthest points from Earth were gradually changing. "这颗卫星的轨道近日点和远日点每绕行一圈都会稍微偏移，这意味着它距离地球最近和最远的点在逐渐变化。astronomyspacephysicssciencepositionChat with AIVocabulary GamePractice Reading
