This recipe is foolproof ─ it works every time.
這個(gè)食譜絕對(duì)管用，每次都萬無一失。
The system is not 100 per cent foolproof
這個(gè)系統(tǒng)并非是萬無一失。
I spent the day working out a foolproof plan to save him.
我花了一天的時(shí)間想出了一個(gè)營(yíng)救他的周全方案。
Always ensure you have a foolproof way to get paid.
永遠(yuǎn)確保你拿得到錢。
This new system is supposed to be foolproof.
據(jù)說這個(gè)新系統(tǒng)不會(huì)出毛病。