unfasten.ʌn'fɑ:sn英式朗读美式朗读基本解释vt. 解开, 放松英文释义v. cause to become undone v. become undone or untied词形变化过去式unfastened现在分词unfastening过去分词unfastened第三人称单数unfastens上一个单词:unfashioned下一个单词:unfastened