undetermined
/ˌʌndɪˈtɜːmɪnd/adjective
1- not authoritatively decided or settled未正式决定的; 未解决的; 未确定的：
the acquisition will result in an as yet undetermined number of lay-offs.
并购将导致目前尚未确定数量的人员下岗。
1.1
- not known不明确的：
the bus was travelling with an undetermined number of passengers when it crashed.
撞毁时, 公交车内旅客人数不明。