basic fundamental

例句：

1. 1. Basic research is the foundation of all scientific progress.
   基础研究是所有科学进步的基础。
2. 2. The basic principles of physics are universally accepted.
   物理学的基本原理被普遍接受。
3. 3. The company's success is based on its strong brand and excellent products.
   公司的成功基于其强大的品牌和优质的产品。