ADJ [usually ADJ n]没有预设目标的；无意作出结论的；无期限的 When people begin an open-ended discussion or activity, they do not have a particular result, decision, or timespan in mind. 没有预设目标的；无意作出结论的；无期限的
Girls do better on open-ended tasks that require them to think for themselves.
女孩子更擅长需要独立思考的开放式任务。
...open-ended questions about what passengers expect of an airline.