you can bet your life
US /juː kæn bɛt jʊər laɪf/
UK /juː kæn bɛt jʊər laɪf/

1.
間違いなく, きっと
used to emphasize that something is certainly true or will certainly happen
:
•
You can bet your life he'll be late again.
間違いなく彼はまた遅刻するだろう。
•
Will they win the championship? You can bet your life on it!
彼らはチャンピオンシップに勝つだろうか? 間違いなく勝つよ!