noun 下载 🔗分享 羟基,氢氧基 A univalent radical or functional group (–OH) in organic chemistry; present in alcohols, phenols, carboxylic acids and certain other classes of compounds. Examples : "The scientist added a hydroxyl group to the molecule to make it a type of alcohol. " 科学家给分子添加了一个羟基,使它变成了一种醇类物质。 chemistry biochemistry compound substance 与AI对话词汇游戏阅读练习