Koch's reaction

例句：

1. 1. The scientists were shocked by the sudden change in the weather.
   科学家们对天气突然变化感到震惊。
2. 2.The discovery of this new compound has sparked a lot of interest in the field.
   这种新化合物的发现引起了该领域的极大兴趣。
3. 3.The researchers conducted a series of experiments to determine the optimal conditions for the reaction.
   研究人员进行了一系列的实验，以确定反应的最佳条件。