1. 定义不清晰的 ill-bred 没有教养的：ill-defined 定义不清晰的 ill-bred 没有教养的 | ill-advised 不明智的 ill-managed管理不善的 | ill-mannered 行为举止不礼貌的

2.

2. 不清楚的：ill-considered 欠考虑的 | ill-defined 不清楚的 | ill-disposed 不怀好意的

3. 欠明了的：欠密的underdense | 欠明了的ill-defined | 欠平衡underbalance

4. 定义不清的：collaboration 协作,合作 | ill-defined 定义不清的 | relax 释放

1. 不清楚的;不分明的;不确定的
    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.

    e.g. ...staff with ill-defined responsibilities.
           职责划分不明确的员工队伍

1. poorly stated or described

    e.g. he confuses the reader with ill-defined terms and concepts

    Synonym: unclear