research and development cost

例句：

1. 1. The company's research and development costs have increased significantly.
   该公司的研发成本大幅增加。
2. 2. To improve efficiency, the government is investing more in research and development.
   为了提高效率，政府正在增加对研究和开发的投资。
3. 3. The cost of research and development is a significant factor in determining the success of a new product.
   研发成本是决定新产品成功的关键因素。