conduit conductor rail system

例句：

1. 1.Conduits are used to transport fluids through a system.
   导管用于通过系统传输流体。
2. 2.The conduit was designed to prevent leaks in the pipeline.
   导管设计用来防止管道泄漏。
3. 3. Conduits are often made of metal to withstand high pressure.
   导管通常由金属制成，以承受高压。