unduly
词形变化：
形容词: undulatory | 动词过去式: undulated | 动词过去分词: undulated | 动词现在分词: undulating | 动词第三人称单数: undulates |
unduly
词形变化：
形容词: undulatory | 动词过去式: undulated | 动词过去分词: undulated | 动词现在分词: undulating | 动词第三人称单数: undulates |