The origin of the idiom "bet bottom dollar" is not precisely documented, but it likely emerged in American English in the late 19th or early 20th century. The phrase draws on the notion of someone being so confident or sure of something that they would wager their last dollar, which is the "bottom dollar," on it. This expression is used to convey a high level of certainty or confidence in the outcome of a particular situation or statement. Essentially,

What is the origin of the idiom "bet bottom dollar" and when to use it?

“ bet bottom dollar”的英语定义和含义

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