Drainage conduit的用法和樣例：
例句
- The drainage system is being improved with additional drainage channels dug to ensure the pitch remains in top condition.
我們挖掘了額外的排水管道以便使排水系統保持最佳狀態(tài)。 - The city was even equipped with a drainage system, for many clay pipes were found beneath its narrow streets.
城里甚至還敷設了排水系統，因為在狹窄的街道底下發(fā)現了許許多多陶土制作的排水管道。
