指因习惯某一种做法或说法而成为一种习俗customs arise from common practice

• 与此同时，千百年来四川民间也流传着独特的武功，相习成风，经世不衰。

  At the same time, unique martial arts have been passed down among the people of Sichuan for thousand of years, and they have become custom and thereby kept alive.