(you can) bet your bottom dollar/your life (on sth/that…)
释义
●(you can) bet your bottom ˈdollar/your ˈlife (on sth/that…) (informal) (you can) be certain of sth(可以)肯定,打包票;毫无疑问◆You can bet your bottom dollar that he’ll forget our anniversary. 可以打包票,他会把我们的纪念日忘掉。