There is no magic formula for passing exams—only hard work.

根本没有通过考试的魔法—只有勤奋学习。

《牛津词典》

There's no magic formula for success - just lots of hard work.

成功没有诀窍——只有大量艰苦的努力。

youdao

But in the vast majority of cases, that formula remained impossibly hard to solve.

但是在绝大多数情况下，这个公式都是无法求解的。

youdao

As ever, what kept a woman pure was the drudge's life, of which Juvenal supplied the traditional formula: "Hard work, short sleep, hands chafed and hardened" from housework.

WSJ: Still Under Cleopatra's Spell

Very hard for people to stick with a formula that is telling you to buy out-of-favor stocks that were spit out by a computer, you know, nonetheless, and to stick with that when it's not working.

FORBES: Intelligent Investing Transcript

Hard-line opponents of hunting accept that such a formula, combined with a ban on hare coursing and stag hunting, may be acceptable to many Labour MPs who have so far voted consistently for an outright ban.

BBC: Consultation on future of hunting