astronomical unit
noun /ˌæstrənɒmɪkl ˈjuːnɪt/
/ˌæstrənɑːmɪkl ˈjuːnɪt/
(abbreviation AU)
(astronomy)- a unit of measurement equal to 149.6 million kilometres, which is the distance from the centre of the earth to the sun
| 单词 | astronomical unit |
| 释义 | astronomical unitnoun /ˌæstrənɒmɪkl ˈjuːnɪt/ /ˌæstrənɑːmɪkl ˈjuːnɪt/ (abbreviation AU) (astronomy)
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