coenosarc

例句：

1. 1.The coenosarc was a cylindrical structure that housed the heart of the machine.
   这个内腔结构是机器心脏的容纳空间。
2. 2.The coenosarc was designed to protect the delicate components within.
   这个内腔结构设计用来保护内部的敏感部件。
3. 3. The coenosarc was crucial in maintaining the stability of the machine during operation.
   这个内腔结构在机器运行中保持稳定性至关重要。