【化】 discharge cover
discharge; get rid of; remove; strip; unload
broken bits; dregs; residue; sediment
【化】 mud
class; door; gate; gateway; ostium; phylum; school
【计】 gate
【医】 binary division; hili; hilum; hilus; phylum; pore; Pori; porta; portae
portal; porus; pyla
【经】 portal