molecular modification

例句：

1. 1.The process of molecular modification is crucial for the development of new drugs.
   分子修饰过程对于新药的开发至关重要。
2. 2.In molecular modification, scientists are able to change the structure of molecules to improve their properties.
   在分子修饰中，科学家们能够改变分子的结构以改善其性质。
3. 3. The molecular modification of DNA has been a topic of great interest in genetic engineering.
   DNA的分子修饰在基因工程中是一个备受关注的话题。