"on the borderline" in Chinese (Simplified)
在边缘临界
Definition
描述非常接近某个界限或边缘，常用于两种状态之间，比如成功和失败，或健康和疾病。
Usage Notes (Chinese (Simplified))
常用于描述临界状况，如“在贫困边缘”或“在天才与疯狂之间的临界点”。常带有不确定或尚未决定的意味。比日常口语更正式。
Examples
His health is on the borderline between normal and poor.
他的健康状况**在边缘**，介于正常和差之间。
She is on the borderline of passing the exam.
她**在边缘**，差点及格考试。
This idea is on the borderline between brilliant and strange.
这个想法**在边缘**，既聪明又奇怪。
His actions are always on the borderline of what’s acceptable.
他的行为总是**在边缘**，勉强被接受。
Sometimes, her mood is so unpredictable it feels on the borderline between happy and sad.
有时候，她的情绪很难预测，感觉**在边缘**，介于高兴和难过之间。
You’re on the borderline of being late—hurry up!
你快**临界迟到**了，快点！