pipeline

n.管道，管线

pinnate, pinny, pinpoint, pinprick, pins and needles, pint, pint-sized, pinto, pioneer, pioneering, pious, piously, piousness, pip, pip-squeak, pipal (also peepul), pipe, pipe-cleaner, pipe-dream, pipeclay, piper, pipette, piping, pipit, pippin, piquancy, piquant, piquantly, pique, piquet, piracy, piranha, pirate, piratical, piratically, pirouette, Pisa, piscatorial, Piscean, Pisces,