煤气管网随着运行时间的增加，易发生煤气泄漏，引发各种事故。

Gas pipe network easily leaked as time passed and this would result in incidents.

youdao

煤气管网随着运行时间的增加，易发生煤气泄漏，引发各种事故。

Gas pipe network easily leaked as time passed and this would result in incidents.

youdao