precursor effect

例句：

1. 1.The early warning system is designed to detect the precursor effect of natural disasters.
   早期预警系统旨在检测自然灾害的先兆。
2. 2. In this study, we found that the precursor effect was significant in predicting the outcome of the experiment.
   在这项研究中，我们发现先兆效应在预测实验结果方面具有显著性。
3. 3. The researcher proposed that the precursor effect could be used as a tool for early detection and prevention of diseases.
   研究者提出，先兆效应可以作为早期检测和预防疾病的一种工具。