ill-defined problem不完善的问题;界定含混的问题
ill-defined entity含义不明的实体
ill-defined condition不明确的情况
Ill-defined conditions其他诊断欠明之病态;不确定情况
ill-defined divide表现不明显的分水岭
ill-defined circulation不完整的环流
Ill-defined dizziness难以定义的头晕
Ill-defined disease不明确的疾病
ill-defined experience不明确的体验
ADJ（形容词） If you describe something as ill-defined, you mean that its exact nature or extent is not as clear as it should be or could be. 不清晰的; 不明确的
...staff with ill-defined responsiblities.
...员工的职责划分不够清晰。