elastomeric yarns

例句：

1. 1. The material is elastic, which makes it easy to stretch and recover.
   这种材料是弹性的，这使得它容易拉伸和恢复。
2. 2.The fabric is elastic, so it can be worn over multiple layers without becoming wrinkled.
   这种布料是弹性的，所以它可以多层穿着而不起皱。
3. 3. The rubber band is elastic, which helps to keep the shape of the toy ball.
   橡皮筋是弹性的，这有助于保持玩具球的形状。