1. Scientists proposed a hypothesis to explain this phenomenon.
科学家提出了一个假设来解释这个现象。
2. The hypothesis must be based on observations and data.
假设必须基于观察和数据。
3. This hypothesis was verified in the experiment.
这个假设在实验中得到了验证。
4. Hypothesis is an essential part of the scientific method.
假设是科学方法的重要组成部分。
5. The hypothesis can be refuted or modified.
假设可以被推翻或修改。