pipe /paip/ n.［c］管子，导管，烟斗：Water is brought into our house through pipes.水通过管道通到我们的房子里。He likes to smoke a pipe.他喜欢用烟斗吸烟。 

pipeline /ˈpaipˌlain/ n. [c] 管道，管线：gas(oil, water) pipeline煤气（石油，自来水）管道Recently they have laid an underground pipeline.最近他们铺设了一条地下管道。