Breathing air was forced through ducts filled with copper pot scrubbers.
强行让流动的空气通过用铜填充的导管。
The pancreas has both exocrine and endocrine portions. It secretes digestive juice through ducts, and secretes the hormone insulin into the blood stream.
胰腺内、外分泌部分都有。它通过导管分泌消化液，又向血流分泌这种胰岛索激素。
Pipes and ducts for electricity, water and waste are threaded through each floor module while it is still in the factory.
每个楼层模块仍在工厂里的时候，电力、水和废弃物的管道将他们接通。
应用推荐