ulcerative
词形变化：
形容词: ulcerative | 动词过去式: ulcerated | 动词过去分词: ulcerated | 动词现在分词: ulcerating | 动词第三人称单数: ulcerates |
ulcerative
词形变化：
形容词: ulcerative | 动词过去式: ulcerated | 动词过去分词: ulcerated | 动词现在分词: ulcerating | 动词第三人称单数: ulcerates |