hypothesis in theory

例句：

1. 1. The scientist made several hypotheses about the cause of the disease.
   科学家提出了几个关于这种疾病原因的假设。
2. 2.He proposed a hypothesis that could explain the phenomenon.
   他提出了一个可以解释这一现象的假设。
3. 3.The team conducted experiments to test their hypothesis.
   团队进行了实验来测试他们的假设。