inconclusive
adj. 不确定的，非决定性的，无结果的
例句
The scientist has frowned, looked at the graphs, and said "the data are still inconclusive."
这位科学家皱了皱眉头，看了看图表，然后说：“数据仍然不确定。”
Research has so far proved inconclusive.
迄今为止研究还没有任何定论。
《柯林斯英汉双解大词典》
The past two elections were inconclusive.
过去的两次选举都没有结果。
