都と市しガス

noun

city gas; mains gas; piped gas

Gas supplied to homes and buildings through underground pipes, as opposed to bottled propane (プロパンガス).

• このマンションは都と市しガスなので、ガスボンベの交こう換かんが不ふ要ようです。

  This apartment uses city gas, so there's no need to replace gas cylinders.