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。
几乎；不明确在边界或界限的某一侧,模棱两可；品味或可接受性有问题；接近不良品味；表现出边缘性人格障碍；边界的
barely acceptable; of doubtful or minimal quality
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。
用法提示：borderline 作表语形容词，意为“勉强合格的”，说明早餐质量刚到及格线。
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。
用法提示：borderline 作定语形容词，修饰 answer，表示“勉强合格的、差强人意的”。
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。
用法提示：borderline 作表语形容词，表示“刚过及格线、勉强合格”。
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。
grammar · medium
易错句子The two countries borderline each other.
正确表达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。
grammar · medium
易错句子He has a borderline to success.
正确表达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。
borderline 作名词时多指抽象或心理上的界线，或指勉强合格的状态；boundary 则多指具体的地理或概念分界。
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