expandable plastic

例句：

1. 1. This new type of expandable plastic is much stronger than traditional materials.
   这种新型的可扩展塑料比传统材料要强得多。
2. 2. The engineers used expandable plastic to create a more durable and flexible design for the bridge.
   工程师们使用可扩展塑料来为桥梁创造一个更耐用、更灵活的设计。
3. 3.The expandable plastic was designed to be easily molded into various shapes without losing its strength.
   这种可扩展塑料被设计成可以轻易地塑形成各种形状，而不会失去其强度。