baps friendship between old and young people (become) the best of friends in spite of the difference of age the best of friends in spite of the difference of age
I thought I was several years older than your parents, so our friendship is really a forget-the-age mutually beneficial relationship.
我想我比你父母还要年长几岁,所以我们的友谊真正是一种互利的忘年之交。
—— 给力词典精选Make friends with a professor regardless of age gap
和一位教授结下忘年之交
—— 给力词典精选