Level 5 · word 9,331 of 20,000

borderline

/ˈbɔːrdərˌlaɪn/ American
  • adj. 临界的, 边缘性的
  • n. 边界, 界线
Definition
  • adj. not clearly belonging to one category or another
  • n. a line marking the boundary between two areas
Example
His test score was borderline between a pass and a fail.
他的考试成绩在及格与不及格之间徘徊。