penstock inside dam

例句：

1. 1. The penstock iscrucial for the operation of the hydroelectricplant.
   水力发电站的水泵是运行的关键。
2. 2. The engineers carefully designed thepenstock to ensure efficient flow.
   工程师们仔细设计了水泵，以确保水流高效。
3. 3.The penstock was installed in the mountainstream to harness its power.
   水泵被安装在山间溪流中以利用其动力。