as pipeline的用法和样例：
例句
- As for gas pipelines, the gas company dedicated to transforming the operations.
至于燃气管道，改造要由燃气公司的专人操作。 - Zhicheng in Beijing in Beijing participated in the Beijing Metro to create, airport construction, road construction, emergency, gas pipeline construction projects.
志成在北京在北京参与了北京地铁创建，机场建设，道路施工，抢险，燃气管道的施工等项目。
