Read Edit View history 天文单位 tiānwéndānwèi astronomical unit Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 天文单位/ 天文單位 tiānwéndānwèi astronomical unit astronomical unit (AU); a unit of distance used in astronomy equal to the average distance between the Earth and the Sun, approximately 150 million kilometers Edit Delete References Add reference No references for this word.
天文单位/ 天文單位 tiānwéndānwèi astronomical unit astronomical unit (AU); a unit of distance used in astronomy equal to the average distance between the Earth and the Sun, approximately 150 million kilometers Edit Delete