astronomical unit
复数形式
astronomical units
1
天文单位, AU
a unit of measurement equal to the average distance between the Earth and the Sun, approximately 149.6 million kilometers
- An astronomical unit measures distances within our solar system.
天文单位测量我们太阳系内的距离。
- Earth's orbit spans about one AU.
地球的轨道跨度约为一天文单位。
- Neptune is approximately 30 AU away.
海王星距离约30天文单位。
- Astronomers use AUs for interplanetary measurements.
天文学家使用天文单位进行行星间测量。
- An astronomical unit the average distance from Earth to the Sun.
天文单位是地球到太阳的平均距离。