planetary nebula

• 行星状星云

planetary nebula的英文翻译是什么意思，词典释义与在线翻译：

英英释义

Noun:

1. a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star

planetary nebula的用法和样例：

例句

1. Many objections can be raised to this picture of planetary nebula formation.
   形成行星状星云的这一图象可能会引起许多异议。
2. This image from the Hubble Space Telescope reveals the Cat&squots Eye Nebula to be one of the most complex planetary nebulae known.
   这张来自哈伯太空望远镜的影像，透露出猫眼星云是现知结构最复杂的行星状星云之一。