David and Sarah are plumbers working from different locations. They discuss a problem with a leaking pipe. They try to find a solution through their talk.
Vocabulary:
Leak: Water escaping from a pipe or container.
Valve: A device to control the flow of water.
Patch: A piece used to cover and fix a hole.
Sealant: A substance used to stop leaks by sealing.
Rust: A reddish-brown substance formed by metal decay.
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