请输入您要查询的英文单词:
单词
spiral nebula
释义
spiral nebula
美
/ ?spa?r?l ?nebj?l? /
简明释义
[天] 旋涡星云
专业释义
1
天文学
旋涡星云
螺旋星云
双语例句
1
Good spectra of the
spiral
nebulas
are difficult to obtain because of their extreme faintness.
旋涡星云因为非常暗,难以得到它们的清晰的光谱。
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更新时间:2025/8/14 20:21:34