“polar night”的概念、定义、翻译、参考文献-科学参考

单词	polar night
释义	polar night [`pō·lǝr `nīt] ^ASTRONOMY The period of winter darkness in the polar regions, both northern and southern.
随便看	Brachiopoda brachioradialis brachistochrone brachium Brachyarchus brachyaxis brachyblast brachycephalic brachycephaly brachycerebral brachycranial brachydactylia brachydiagonal brachydont brachyfacial Brachygnatha brachypinacoid Brachypsectridae Brachypteraciidae brachypterous brachysclereid brachyskelic brachysm brachysyncline brachytherapy

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