การระบายน้ำ(gaan rá-baai náam)

Meanings

1NounB2

drainage (of water); water removal

the process of removing excess water from land, buildings, or structures via natural or engineered channels, pipes, or pumps

Examples

Bangkok has drainage problems, so whenever it rains heavily, there's always flooding.
2NounB2

water discharge (from a facility)

the controlled release of water from reservoirs, dams, or treatment facilities to manage levels or flow