borderline
adjective uk/ˈbɔː.də.laɪn/ us/ˈbɔːr.dɚ.laɪn/
两可的，临界的；所属不清的
between two different conditions, with the possibility of belonging to either one of them
Only in borderline cases (= cases where students might succeed or fail) will pupils have an oral exam. 只有在处于及格边缘的情况下小学生才会有口试。
She was a borderline candidate for the job. 她是个不上不下的候选人。
Synonym: marginal
borderline
noun [ S ] uk/ˈbɔː.də.laɪn/ us/ˈbɔːr.dɚ.laɪn/
分界线
something that separates two different qualities
The borderline between friendship and intimacy is often hard to define. 友谊和亲昵关系之间的界线常常很难界定。
See also: border noun