1. Firstly, we need to gather all the necessary materials. Secondly, we can start the experiment.
首先，我们需要收集所有必要的材料。其次，我们可以开始实验。
2. Firstly, we need to prioritize our tasks. Secondly, we can allocate resources accordingly.
首先，我们需要对任务进行排序。其次，我们可以相应地分配资源。