light-time for astronomical unit distance
天文单位距离的光行时
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，
a linear unit used for astronomical distances.
用来表示天文学距离的长度单位。
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。
distance travelled per unit time.
单位时间内形成的距离。
a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years.
测量恒星距离的天文学长度单位；一秒差距等于三十万亿公里。
Astronomers use light-year to talk about distance in space.
天文学家用光年表示宇宙空间的距离。
a unit of angular distance equal to 60 degrees.
等于度的角距离单位。
--the astronomical distances which separate us.
分隔我们的天文距离。
The speed of light is the natural link between distance and time measurements.
光速是测量距离和测量时间的天然连接线。
HubBle distance
哈勃距离(天文学)
When Einstein announced his general theory of relativity in 1916, astronomers had little conception of distances beyond a few thousand light-years.
当爱因斯坦在1916年发表广义相对论时，天文学家们对于大于几千光年的距离还没有什么概念。
Today this prime location is within walking distance of many major Parisian tourist attractions,
今天这个主要位置距离巴黎许多重要的观光景点
(astronomy) having an orbit farther from the sun than the Earth's orbit.
（天文学）距离太阳轨道比距离地球轨道远的。
And the astronomy phenomenon that these words reflected are: be in mention of the sun and the time unit "day" ;
此类字反映出的古代天文现象大致有：太阳的运行及时间单位“日”；
Returns the distance, in Twips, between the upper left corner of the control and the upper left corner of a specified row.
返回指定行的左上角到控件左上角之间的距离，单位为缇。
Not only does the distance traveled in unit time remain the same but the direction does not change as well.
不仅单位时间内移动的距离不变，而且其方向也不改变。
The competition is basically a team long-range reconnaissance exercise behind" enemy lines".
这一赛事基本上是以小队为单位进行的远距离"敌后"侦察演习活动。