Yahoo香港字典 搜尋

  1. astronomical unit

    英式

    • n.
      a unit of measurement equal to 149.6 million kilometres, the mean distance from the centre of the earth to the centre of the sun.
    • noun: astronomical unit, plural noun: astronomical units

    • 更多解釋
    • IPA[ˌastrəˈnäməkəl ˈyo͞onət]

    美式

    • n.
      a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of ...

    Oxford American Dictionary