释义 |
mean distance mi:nˈdistəns 短语⁸⁴³²⁰⁺⁸ 基本英英例句 平均距离
Noun: the arithmetic mean of the maximum and minimum distances of a celestial body satellite or secondary star from its primaryA unit of length used for distances within the solar system,equal to themean distancebetween the Earth and the Sun.用来计算太阳系内距离的单位,等于地球到太阳的平均距离。 |