astronomical unit
US /ˌæs.trəˈnɑː.mɪ.kəl ˈjuː.nɪt/
UK /ˌæs.trəˈnɑː.mɪ.kəl ˈjuː.nɪt/
名詞
1.
天文單位
a unit of length, roughly the distance from Earth to the Sun, used to express distances within the solar system. It is approximately 150 million kilometers (93 million miles).
範例:
•
Mars is about 1.5 astronomical units from the Sun.
火星距離太陽約1.5天文單位。
•
The distance between Earth and the Sun is defined as one astronomical unit.
地球與太陽之間的距離被定義為一天文單位。
同義詞:
在 Lingoland 學習這個單詞