silver bullet
noun [ C ] uk/ˌsɪl.və ˈbʊl.ɪt/ us/ˌsɪl.vɚ ˈbʊl.ɪt/
银弹(指针对复杂问题的简单解决办法),良方,高招
a simple solution to a complicated problem
There was no silver bullet that could have prevented the atrocities. 没有什么好办法可以预防这些暴行。
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