elastical metallic expansion ring

例句：

1. 1.The fabric is elastic, so it stretches easily.
   这布料是弹性的，所以很容易拉伸。
2. 2. The shoes are flexible, which makes them comfortable to wear.
   鞋子是灵活的，这使得穿起来很舒服。
3. 3. The material is elastic, which means it can be stretched without breaking.
   这种材料是弹性的，这意味着它可以被拉伸而不会断裂。