substantial argument

例句：

1. 1. The company's decision to invest in new technology was a substantial investment.
   公司决定投资新技术是一个重大的投资。
2. 2.The project is substantial in scope and requires careful planning.
   这个项目的规模很大，需要仔细规划。
3. 3.The research findings were substantial enough to change the industry's approach.
   研究结果足够重要，足以改变该行业的工作方式。