【机】 asparamide; aspartamic acid
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
winter
【机】 acid amides; acidamide; amidase; amidate; amide