| 释义 |
mean sun 【天文学】 平太阳 以上来源于：《21世纪大英汉词典》 mean sunn.【天文】平太阳详细释义源自:《新世纪英汉大词典》Collins外研社 n.平太阳【天文学】英英释义n.a theoretical sun that moves along the celestial equator at a constant speed and completes its annual course in the same amount of time the real sun tak |