you can bet your life/your bottom dollar (on sth/(that)…)
释义
● you can bet your ˈlife /your bottom ˈdollar (on sth /(that )… )(informal ) used to say that you are certain that sth will happen 肯定;毫无疑问◆ You can bet your bottom dollar that he'll be late . 他肯定会迟到。See also bet