pipelines
A pipeline is a large pipe that is used for carrying oil or gas over a long distance, often underground.
A consortium plans to build a natural-gas pipeline from Russia to supply eastern Germany.
一家财团计划建造一条从俄罗斯向德国东部输送天然气的管道。
in the pipeline
If something is in the pipeline, it has already been planned or begun.
Already in the pipeline is a 2.9 per cent pay increase for teachers.
已筹划将教师的工资提高2.9。