elastic sphere

例句：

1. 1.The elastic sphere is used to store and release energy.
   弹性球体用于储存和释放能量。
2. 2. The elastic sphere helps to prevent the spread of bacteria.
   弹性球体有助于防止细菌的传播。
3. 3. The elastic sphere can be stretched and then released to return to its original shape.
   弹性球体可以被拉伸然后释放回到其原始形状。