







tunnel system
tunnel network
The Chicago River flooded the city's underground tunnel system...
I have also heard about underground tunnel system that run in mazes under the surface of the planet.

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Open the tool →隧道系统 (suì dào xì tǒng) means “tunnel system, tunnel network”.
隧道系统 is pronounced suì dào xì tǒng in Mandarin Chinese.
“tunnel system” is 隧道系统 (suì dào xì tǒng) in Chinese.
This page has 2 example sentences using 隧道系统, each with pinyin and an English translation.