filling insulant

例句：

1. 1. The engineer useda filling insulant to reinforce thestructure.
   工程师使用一种填充物来加固结构。
2. 2.The carpenter filled insulantaround the cracks in the wood.
   木匠在木头上的裂缝周围填充了填充物。
3. 3.The scientist discovered that certain insulantmaterials could be used as substitutes fortraditional plastics.
   科学家发现某些填充物可以作为传统塑料的替代品。