自然而然

Explanation: Free development is bound to it. Refer to non-human intervention and natural case. 　　Usage: Complex type; as adverbial; with compliment 　　Source: "Muzi Doubts chapter," Fuji fierce it with good and evil, I still take the form of good and evil voice, naturally, not the phase-free also. " 　　Examples: Somehow there is a strange feeling ~. ★ Qing Wen Kang "Heroic Biography" The 18th 　　Riddle: Skyfire Thesaurus:  be dissolved in [into] tears, cannot help laughing, be unable to stifle a laugh; can’ t help laughing, Renjunbuzhu, let loose a banquet of brine, tears and mucus flowing down rapidly, Spontaneously, quiet or partly suppressed laugh Antonym Group:  forced laughter, find happiness in suffering