elastic center

例句：

1. 1. The material has an elastic center that allows it to return to its original shape when stretched.
   这种材料有一个弹性中心，当被拉伸时它会恢复到原始形状。
2. 2.The engineer designed the machine with an elastic center to distribute the weight evenly across the entire structure.
   工程师设计的机器具有一个弹性中心，以均匀地将重量分布在整个结构上。
3. 3. The basketball player's ability to move around the court with an elastic center is key to his success.
   篮球运动员在球场上灵活移动的能力是他成功的关键。