论文borderline是意思相近的论文。扩展：1There is no obvious borderline between good and 善与恶之间没有一个明显的分界线。2Officials were unable to ascertain this borderline 官员们无法查清这个模棱两可的案件。3Soldiers observed the movements of soldiers from neighboring countries near the 士兵们观察了边界线附近邻国士兵的行动。
