noun 下载 🔗分享 酮类，酮。 A homologous series of organic molecules whose functional group is an oxygen atom joined to a carbon atom—by a double bond—in a carbon-hydrogen based molecule. Examples : "The chemist explained that the body produces ketones during periods of fasting. " 化学家解释说，身体在禁食期间会产生酮类物质。 compound chemistry biochemistry substance science 与AI对话词汇游戏阅读练习
