pipe·lineBrE/ˈpaɪplaɪn/NAmE/ˈpaɪplaɪn/nounaseriesofpipesthatareusuallyundergroundandareusedforcarryingoil, gas, etc. overlongdistances输油管道,输气管道,输送管线(通常指地下的)●intheˈpipelinesomethingthatisinthepipelineisbeingdiscussed, plannedorpreparedandwillhappenorexistsoon在讨论(或规划、准备)中;在酝酿中