foolproof
🇺🇸
/ˈfuːlpruːf/
🇬🇧
/ˈfuːlpruːf/
adjective
R
A method or system that is so well designed it is impossible to make a mistake or fail.
This new recipe is foolproof, even a beginner can make it.
这个新食谱是万无一失的，即使是初学者也能做。
translation
万无一失