doubtable

例句：

1. 1. The outcome ofthe election is doubtable, asthere are still many undecidedvoters.
   选举的结果难以确定，因为仍有许多未决定的选民。
2. 2. The evidence was so inconclusive that it left uswith a doubtable conclusion.
   证据如此不确凿，以至于我们得出了一个不确定的结论。
3. 3. The scientist's findings were doubtable, and further testing was requiredto confirm their validity.
   科学家的发现是可疑的，需要进一步测试以确认其有效性。