This distance is known as the 'astronomical unit' or AU.
这个距离被称为“天文单位”或 AU。
Light - year is an astronomical unit.
光年是一个天文单位。
An astronomical unit is the distance between Earth and our sun.
一个天文单位是地球与太阳之间的距离。
The distance from the sun to earth is one astronomical unit.
太阳到地球的距离即为一个天文单位。
One astronomical unit is the distance between the Earth and the sun.
一个天文单位等于地球到太阳之间的距离。
One astronomical unit equals the distance from the earth to the sun.
一天文单位等于从地球到太阳的距离。
Know astronomical unit and light year are used for expressing the distance between celestial bodies.
知道天文单位和光年是用来丈量天体之间距离的单位。
One astronomical unit is equal to the average radius of the Earth's orBit, aBout 93, 000, 000 miles.
一个天文单位等于地球轨道的平均半径，大约是93，000，000英里。
One astronomical unit is the distance between the Earth and the sun, about 93 million miles (150 million km).
一个天文单位是地球与太阳的距离，大约9300万英里(1.5亿公里)。
Most planet-formation models predict a “planet desert” within one astronomical unit (or the average distance from the Earth to the sun) of a host star.
大多数行星形成模型预言在主恒星一个天文单位（或从地球到太阳的平均距离）以内会有一个“沙漠之星”。
But now, the crystalloid has been detected two astronomical unit distances away from earth, and it is flying to the earth accurately with its precipitous unnatural orbit.
但现在晶体在两个天文单位外被探测到，它沿一条陡峭的绝非自然形成的轨道精确地飞向地球。
But now, the crystalloid has been detected two astronomical unit distances away from earth, and it is flying to the earth accurately with its precipitous unnatural orbit.
但现在晶体在两个天文单位外被探测到，它沿一条陡峭的绝非自然形成的轨道精确地飞向地球。
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