convolute elastic tube

例句：

1. 1. The convoluted shape of the tube allows it to be easily inserted into the body.
   这种管状的卷曲形状使得它能够容易地插入身体。
2. 2. The convoluted structure of the brain is responsible for its complex functions.
   大脑的卷曲结构负责其复杂的功能。
3. 3. The convoluted surface of the shell helps protect the soft inner tissue.
   贝壳的卷曲表面有助于保护柔软的内部组织。