相关单词同义词blocking agent, paralyzer, 近义词 retardation 智力迟钝, retardent 阻化剂临近词retard, retardation film, retarding effort, retarded machine, retarding spring, retarded cooling, retarding moment, retarding rocket, retarding system, retarder booster, retarded control相似词retake, retaliate, retaliatory, retard, retardation, retarded, retch, retcon, 返回 retardant