astronomical unit
US /ˌæs.trəˈnɑː.mɪ.kəl ˈjuː.nɪt/
UK /ˌæs.trəˈnɑː.mɪ.kəl ˈjuː.nɪt/
1.
天文単位
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).
:
•
Mars is about 1.5 astronomical units from the Sun.
火星は太陽から約1.5天文単位離れています。
•
The distance between Earth and the Sun is defined as one astronomical unit.
地球と太陽の間の距離は1天文単位と定義されています。
: