regain 过去式:regained 过去分词:regained 现在进行时:regaining 词形变化: 名词: regainer | 动词过去式: regained | 动词过去分词: regained | 动词现在分词: regaining | 动词第三人称单数: regains | 词义辨析: 同义参见: ransom retrieve recover