单词	acetyl bromide
释义	acetyl bromide noun : a liquid CH3COBr similar to acetyl chloride in properties and use Word History First Known Use 1873, in the meaning defined above
随便看	hektograph hel Hel Hel-shoes HeLa cell helae Helarctos helas helbeh held held (in) held (past) held a brief for held a candle to held against held back held ball held down held forth held in held in contempt held off held off (on) held off on held on

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