单词	sulfone
释义	sulfone noun sul·​fone ˈsəl-ˌfōn  : any of various compounds containing the sulfonyl group with its sulfur atom having two bonds with carbon Word History First Known Use 1872, in the meaning defined above Medical Definition sulfone noun sul·​fone variants or chiefly British sulphone ˈsəl-ˌfōn  : any of various compounds containing the sulfonyl group with its sulfur atom having two bonds with carbon
随便看	precalculi precalculus precalculuses Precambrian Precambrian shield precambrians precancel precanceled precanceling precancellation precancellations precancelled precancelling precancels precancerous precapitalist precapitalists precaria precarial precarious precariously precariousness precariousnesses precarity precarium

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