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planetary nebula的英文翻譯是什麼意思，詞典釋義與在線翻譯：
英英釋義
Noun:
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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的用法和樣例：
例句
- Many objections can be raised to this picture of planetary nebula formation.
形成行星狀星雲的這一圖象可能會引起許多異議。 - This image from the Hubble Space Telescope reveals the Cat&squots Eye Nebula to be one of the most complex planetary nebulae known.
這張來自哈伯太空望遠鏡的影像，透露出貓眼星雲是現知結構最複雜的行星狀星雲之一。
