silver bullet
noun/ˌsɪlvə ˈbʊlɪt/
/ˌsɪlvər ˈbʊlɪt/
(also magic bullet)
[usually singular]- a fast and effective solution to a serious problem
（解决某一问题的）灵丹妙药 - Having a mentor is exciting but it's not a silver bullet for success.
找到一位导师是令人高兴的事，但这并不是成功的灵丹妙药。 - There is no silver bullet to address growing inequality in the population.
解决人口不平等问题没有灵丹妙药。
- Having a mentor is exciting but it's not a silver bullet for success.