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borderline + noun
borderline 作定语，修饰名词。
She was diagnosed with borderline personality disorder.
她被诊断出患有边缘性人格障碍。
勉强合格的；两可的；边缘的
先理解核心含义，再看它在真实句子里的用法。
勉强合格的；两可的；边缘的
barely acceptable; of doubtful or minimal quality
She was diagnosed with borderline personality disorder.
她被诊断出患有边缘性人格障碍。
几乎；不明确在边界或界限的某一侧,模棱两可
Nearly; not clearly on one side or the other of a border or boundary, ambiguous.
品味或可接受性有问题；接近不良品味
Of questionable taste or acceptability; approaching bad taste.
表现出边缘性人格障碍
Exhibiting borderline personality disorder.
The hotel's breakfast was borderline, so we decided to eat elsewhere the next morning.
这家酒店的早餐勉强合格，所以我们第二天早上决定去别处吃。
She gave a borderline answer in the interview, and the manager was not fully convinced.
她在面试中给出了一个勉强合格的回答，经理并没有完全信服。
The phone's battery life is borderline; it barely lasts a full day.
这款手机的电池续航勉强达标，几乎撑不到一整天。
borderline 作定语，修饰名词。
She was diagnosed with borderline personality disorder.
她被诊断出患有边缘性人格障碍。
表示勉强合格或处于临界状态。
His test score was borderline.
他的考试分数刚过及格线。
on the borderline 表示在边界上，常与 between 连用。
The project is on the borderline between success and failure.
这个项目处于成功与失败的边界。
Not this
The two countries borderline each other.
Use this
The two countries border on each other.
误将borderline用作动词，实际上borderline是名词或形容词，表示'边界'或'边缘的'。表达'接壤'应使用动词短语border on。
Not this
He has a borderline to success.
Use this
He is borderline successful.
当borderline作形容词表示'勉强可接受的'时，可直接修饰名词或作表语，无需加介词。这里应直接用borderline successful。
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Revisit a common error or keep this word in your review list.
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.