nonbonding

例句：

1. 1. The bonding between the two countries is weak due to cultural differences.
   由于文化差异，两国之间的联系很弱。
2. 2.The researchers found that the non-bonded hydrogen atoms were responsible for the unusual properties of the material.
   研究人员发现，非键合的氢原子是这种材料异常性质的罪魁祸首。
3. 3.The scientists have developed a new method to study the non-bonded interactions between molecules.
   科学家们已经开发了一种新方法来研究分子间的非键合作用。