托福单词nebula什么意思-nebula词组短语_例句_同义词

nebula意思

n.星云，星云状的星系

形容词：nebular

复数：nebulae

nebula词组短语

horsehead nebula[天文]马头星云

orion nebula猎户座星云；猎户星云

planetary nebula行星状星云

reflection nebula反射星云

emission nebula发射星云

nebula同义词

n.

formulation,preparation,symptom,cloud,spot,speckle,dapple

nebula例句

1.Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看不到河外星系的。

2.Cosmic clouds of hydrogen gas and dust abound in this gorgeous skyscape,stretching through Monocerous in the neighborhood of The Cone Nebula.

在这张绚丽的天空美景中，充满了氢气和尘埃组成的宇宙星云，一直延伸到锥形星云附近的麒麟座内。

3.As our nebula began to collapse under its own gravity and spin faster,a dense clump of matter formed in the center.It's called a protostar.

当我们的星云在自身重力作用下崩溃和更加快速地旋转时，星云中心形成了密集的物质块。这叫做原恒星。