相关单词同义词interference, let, bar, disturbance, dam, 近义词 bar, block, limitation, obstruction反义词aid, expedient, help, support临近词obstetrics, obsolete, obstacles, Obstacled, obstacle to, obstacle zone, obstacle gain, obstacle area, obstacle race, obstacle flow, obstacle path, obstacle flag相似词obsidian, obsolescence, obsolescent, obsolete, obstacle course, obstetric, obstetrician, obstetrics, 返回 obstacle