必由之路

Explanation: By: by. Must go through the road. Must follow the law refers to things or do things have to comply with the law. 　　Usage: Partial official; as subject, object, attribute; that must be followed to achieve the purpose through 　　Source: Qin Meng Ke, "Mencius": "Benevolence, no mind; justice, human way also." Zhu Xi Song Note: "The righteous person should be acting, that find their way, you can be reflected in its the only way to access contacts, And not a moment homes carry on. " 　　Examples: Sixty-hill miles away from here, that the West ~, there are eight hundred in the fire, surrounded by barren. (Ming Wu Cheng-en, "Journey to the West" fifty-ninth back) Thesaurus:  the one and only way; the only proper course to take, The only way, Zhongnanzhen beeline, facility Door Antonym Group:  at bay, Road to make way poor