knee 名词复数:knees 过去式:kneed 过去分词:kneed 现在进行时:kneeing 词形变化: 动词过去式: kneed | 动词过去分词: kneed | 动词现在分词: kneeing | 动词第三人称单数: knees | 词义辨析: 同义: n.膝, 膝盖, 膝关节 patellar region joint stifle