now or never

常見例句

also warned the time was “now or never” for breaking the Doha Round impasse and reaching a global trade deal.
佐利克還警告說，對于打破多哈回合僵局，達成全球貿(mào)易協(xié)定，“機不可失，失不再來”。
Going to Miami was not the problem, but a TV show to announce his decision, Tweeting "now or never" ... he's due for some soul searching.
去邁阿密沒有問題，但不能只是在電視上宣布自己的決定，說什么“機不可失失不再來”，他需要找到靈魂追求的東西！
Meanwhile, Energy Secretary Steven Chu, traveling in Vienna, said Copenhagen is not a "now or never" chance to scale back global greenhouse gas emissions.
與此同時，正在維也納美國能源部部長朱棣文也表示哥本哈根會議并不是“機不可失，時不再來”，以后人們還可以有機會對溫室氣體的排放進行規(guī)定。

Meanwhile, his youth was going away and now this imaginary student is now thirty-three years old never had time to marry or start a normal life.
與此同時，他的青春年華也已經(jīng)逝去了,現(xiàn)在這位設(shè)想出來的同學(xué)已經(jīng)33歲了,還沒有結(jié)婚也沒有開始正常人的生活。
耶魯公開課 - 金融市場課程節(jié)選

According to Ian Vasquez, an analyst at the Cato Institute in Washington, it's now or never for the administration on trade.
FORBES: Bush's Risky Trade Bet
The implication builds in scene after scene that it was truly now or never for abolition by the end of January 1865.
FORBES: In Lincoln (2012 Movie), Why Did Lincoln Rush The Vote On The 13th Amendment?
CN, despite their bluster that it has to be now or never.
ECONOMIST: What kind of industry asks its regulator to block all deals?