stepping stone是可数名词，字面意思是“垫脚石”，和中文完美对应。和中文中的“垫脚石”一样，stepping stone 的引申义也很常见。当我们想表达“A 是 B 的敲门砖”就可以说“A is a stepping stone to B”。

例句

1、A good track record is widely considered a stepping stone to promotion.

2、TikTok's popularity in China turned out to be a stepping stone to its success overseas.

3、Barack Obama's stint as a United States Senator of the state of Illinois served as a stepping stone to his presidency.

翻译

    Good habits are stepping stone to success.

造句

Self-discipline is a stepping stone to success.

The choice could be a stepping stone to bigger things in your career.