[C]垫脚石；引申意思为敲门砖
A是B的敲门砖 A is a stepping stone to B.
Barack Obama's stint as a United States Senator of the state of Illinois served as a stepping stone to his presidency.
TikTok's popularity in China turned out to be a stepping stone to its success overseas.
翻译
A good habit is a stepping stone to success.
造句
Studying in our Phenomenal English Community everyday will serve as a stepping stone to my competency of intercultural communication.
