一失足成千古恨

Explanation: Once committed serious errors or metaphor fall, they become life-long regret. 　　Usage: Complex sentence; for predicate clause; with derogatory 　　Source: Ming Yangyi "Ming-liang Ji" Tang Yin both mountains never abandoned, a poem that goes' one slip into the eternal smile, who go back a century. '" 　　Examples: I know this game of chess is crucial, and must not be the last problem, ~ ah! ★ Chen Zude "beyond self"