在 Cambridge 词典里，pipeline是这样描述的：
a very long large tube, often underground, through which liquid or gas can flow for long distances （常指鋪設在地下的）管道，管線
a very long large tube, often underground, through which liquid or gas can flow for long distances
（常指鋪設在地下的）管道，管線
pipeline 指的是管道。而流水线是指 assembly line。国内有部分的翻译是错误的。