sacrificial anode drainage

例句：

1. 1. The sacrificial anode is used to protect the equipment from corrosion.
   牺牲阳极用于保护设备免受腐蚀。
2. 2. In sacrificial anode protection, the anode is exposed to the environment and acts as acathode.
   在牺牲阳极保护中，阳极暴露于环境中，作为阴极。
3. 3. The process involves using a sacrificial anode to remove harmful substances from the water.
   该过程涉及使用牺牲阳极从水中去除有害物质。