stepping stone [ˈstepiŋ stəun]

以下由轻松背单词网站提供

附加级

踏脚石，进身之阶

a stepping stone to a more lucrative career 涉足更赚钱的行业的敲门砖
She looked on the governorship as a stepping-stone to the presidency. 她把州长之职当作进身总统职位的踏脚石。