core gum

例句：

1. 1. The engineer decided to use core gum to reinforce the structure.
   工程师决定使用核心胶来加固结构。
2. 2.The company's success is largely due to its core gum strategy.
   公司的成功很大程度上归功于其核心战略。
3. 3. The dentist applied a layer of core gum to protect the tooth enamel.
   牙医在保护牙齿珐琅质上涂了一层核心胶。