单词	Janus
释义	Janus noun Ja·​nus ˈjā-nəs  : a Roman god that is identified with doors, gates, and all beginnings and that is depicted with two opposite faces Word History Etymology Latin First Known Use 1508, in the meaning defined above Phrases Containing Janus Janus-faced Janus green Janus-faced Janus green
随便看	sulfonphthalein sulfonyl sulfonyl chloride sulfonyls sulfonylurea sulfonylureas sulforaphane sulfosalt sulfoselenide sulfoxide sulfoxides sulfoxylate sulfoxylic acid sulfur sulfur bacterium sulfur black sulfur chloride sulfur color sulfur dichloride sulfur dioxide sulfur dye sulfur family sulfur flour sulfur hexafluoride sulfur match

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