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词汇 astronomical unit
释义 astronomical unit
基本英英近义反义例句
n.天文单位
天体星系

Noun:
a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun approximately 93 million miles or 150 million kilometers近义词 AU天文单位(=Astron…
用作名词Oneastronomical unitequals the distance from the earth to the sun.一天文单位等于从地球到太阳的距离。
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