机不可失，时不再来

Explanation: Refers to a rare opportunity, must pay close attention, not to be missed 　　Usage: Complex sentence; for clause; 　　Source: "Old Five re-Rong Shi Jin Shuan Chuan": "Yang considered wise, but hiding deep flaws, such as the Heaven of its people, is difficult to resist violation, know now or never." 　　Examples: You should go, should go right away ~ ah! ★ YANG Zong mirror "the memory of actor" Thesaurus:  The mill cannot grind with the water that is past., speed is precious in war, a speedy fight dispatch, seize a chance, Have no choice but Or ease, By iron is hot, avail oneself of Hydration mud, seize every minute and second, against time, Cut the Gordian knot, Broken mess knife, Now (in the time) or never!, Time and tide wait for no man., Time and tide wait for no man Antonym Group:  There is still time to mend, Zhicuojiugai, take measures in time, Gu Dog Your Brother