margin
ˈmɑːdʒɪən noun
7 the edge of something, especially an area of land or water [术语或文] 〔尤指地域或水域的〕边缘,边隅 technical or literary
8
on the margin(s)
a person on the margins of a situation or group has very little power, importance or influence 处于边缘地位,处于非主体地位〔意为无权无势,缺乏影响力〕;