单词 | Polaris |
释义 | Polaris [pǝ`lar·ǝs] ASTRONOMY A creamy supergiant star of stellar magnitude 2.0, spectral classification F8, in the constellation Ursa Minor; marks the north celestial pole, being about 1° from this point; the star Ursae Minoris. Also known as North Star; Pole Star. |
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