隧道
How to Understand
隧道 (suì dào) refers to a passage or structure that allows movement through or under an obstacle, such as a mountain or body of water. Unlike a simple passage, it is typically artificial and designed for transportation, utilities, or other specific purposes.
The character 隧 (suì) originally meant a narrow path or corridor, while 道 (dào) means 'path' or 'way.' Together, they form a compound meaning 'a passageway,' emphasizing both the physical structure and the function of the tunnel.
Tunnels are commonly used in transportation systems like subways, highways, and railways. In China, famous examples include the Qingshuihe Tunnel on the Qinghai-Tibet Railway. Understanding 隧道 helps learners grasp how infrastructure connects different areas, especially in urban or mountainous regions.