by way

柯林斯词典

byway /ˈbaɪˌweɪ/ (byways)

1. N-COUNT A byway is a small road that is not used by many cars or people. 偏僻小路[usu pl]
...the highways and byways of America. ...美国的公路与间道。
2. N-COUNT The byways of a subject are the less important or less well known areas of it. 生僻领域[usu pl, usu N 'of' n]
My research focuses on the byways of children's literature. 我的研究专注于儿童文学中的生僻领域。