The sun is a massive celestial body.

太阳是一个巨大的天体。

Astronomers have discovered a new celestial body.

天文学家发现了一个新的天体。

It absorbs light from a totally different celestial body.

它吸收的光线来自一个完全不同的天体。

The gaseous mass or envelope surrounding a celestial body, especially the one surrounding Earth, and retained by the celestial body's gravitational field .

大气层指环绕天体的气团或气层，尤指环绕地球的气团，被天体重力场所束缚。

The appearance of the sun or other celestial body above the horizon.

开,启:太阳或其他天体出现在地平线之上.

The angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body.

从观测者所在的子午线到给定天体的子午线沿着天赤道的角距离。

The highest point in the sky reached by the sun or another celestial body; a zenith.

天顶太阳或别的天体在天空中所达到的最高点；

In the routine photographic astrometry , the position determination of faint celestial body is realized by using multi-step transition of reference stars.

在常规照相天体测量工作中，对暗天体的定位是采用逐级定标星过渡的方法实现的。

The black hole is a special celestial body, predicted on the basis of general relativity theory.

黑洞是广义相对论所预言的一种特殊的天体。

Once the nearby celestial body fall into the black hole, then disappear and no trace at once.

附近的天体一旦落入黑洞，就销声匿迹，永无踪影。