water line

• 供水管道，通常指自来水系统或基础设施中的输水管道。也指水面与物体表面接触的界线，如船体上的吃水线或海岸线。

A pipe or conduit that carries water, typically in a plumbing system or infrastructure. Also refers to the level or mark where water meets a surface, such as on a ship's hull or a shoreline.

1. Mark on a shipB2formal

   The line on a ship's hull that indicates the level of the water when the ship is afloat.

   水线

   • The ship's water line was clearly visible above the dock.
   • Engineers checked the water line to ensure the vessel was not overloaded.
   • The water line on the hull showed the ship was properly balanced.

2. Plumbing pipeB1formal

   A pipe that supplies water to a building or area.

   供水管

   • The plumber repaired the broken water line under the street.
   • A new water line was installed to connect the house to the main supply.
   • The water line burst due to freezing temperatures.

3. Level of waterB1formal

   The visible boundary or level where water meets the shore or a surface.

   水位线

   • The water line on the beach moved higher during high tide.
   • You can see the water line on the rocks from the last flood.
   • The water line in the lake dropped significantly during the drought.