单词nebula
n.: 【天】星云；【医】角膜翳
网络: 喷雾剂；云翳；角膜云翳
星云；外观似星云的星系:
a mass of dust or gas that can be seen in the night sky, often appearing very bright; a bright area in the night sky caused by a large cloud of stars that are far away
【医】角膜翳
【天】星云
复数：nebulas
复数：nebulae
Infrared observations indicate that this nebula may contain complex carbon molecules known as PAHs.
红外观测器还发现这个星云可能含有叫作多环芳烃的复杂碳分子。
Previously, almost all solar systems seemed to be engulfed by a nebula and there was very little black in the sky around you.
以前，差不多所有恒星系都在星云之中，只有少量星空是黑暗的。
Most scientists believe that the solar system formed from a Nebula of gas, dust and ices, that turned into a disk around the developing sun.
大部分科学家认为太阳系是由包含气体、星尘和冰的星云构成，它们像圆盘一样围绕在膨胀的太阳周围。
Few astronomical sights excite the imagination like the nearby stellar nursery known as the Orion Nebula.
很少有天文景观能像这个邻近的星星育婴房-著名的猎户座星云-激发著人类的想像力。
The name stuck even though the opposite turned out to be true: this type of nebula consists of gas molted from dying stars.
这个名字从此流传下来，即使事实真相刚好相反：这类星云是由濒死恒星所崩落的气体构成的。
Explanation: One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud.
解说：这是天空中最易辨认的星云之一。猎户中的马头星云是一个巨大的黑暗分子云的一部分。
Pictured above is one of several striking dust pillars of the Eagle Nebula that might be described as a gigantic alien fairy.
上图为鹰状星云若干突出的尘埃柱之一，就像是一个巨大的外星精灵。
The dark shape was once assumed to be an obscuring dust cloud seen in silhouette against the bright reflection nebula.
在过去，这个暗色天体曾被认为是个尘埃星云，因为遮掩了后方明亮反射星云的光，而以剪影的形式现踪。
It is one of the best examples of a planetary nebula and a favorite target of amateur astronomers.
它是行星状星云的最好范例之一，也是业余天文爱好者最喜欢观测的目标之一。
l Nebula (plural nebulae) was the word once used for and fuzzy patch of light in the night sky.
l星云这个名称，过去曾经用来泛指夜空中那些发亮的小块区域。