怀疑心

例句：

1. 1. I have a lot of doubts about the results of the experiment.
   我对实验的结果有很多疑问。
2. 2. He had doubts about whether he could finish the project on time.
   他对能否按时完成项目表示怀疑。
3. 3.The scientist was filled with doubt when he saw the evidence.
   科学家在看到证据时充满了怀疑。