steam passage

例句：

1. 1.The steam passage is essential for the operation of the heating system.
   蒸汽通道对于供暖系统的运行至关重要。
2. 2. The engineer carefully inspected the steam passage to ensure its integrity.
   工程师仔细检查了蒸汽通道，以确保其完整性。
3. 3.The steam passage was blocked, causing a significant delay in the production process.
   蒸汽通道被阻塞，导致生产过程严重延误。