purpose of operation

例句：

1. 1. The purpose of this experiment is to test the effectiveness of the new method.
   这个实验的目的是测试新方法的有效性。
2. 2.His main purpose of visiting the museum was to see the famous painting.
   他参观博物馆的主要目的是看那幅著名的画作。
3. 3.The company's mission is to provide high-quality products and services to its customers.
   公司的使命是向其客户提供高质量的产品与服务。