英文關鍵字
agricultural
ancient
antique
bread
cereal
circular
corn
crumble
crush
farm
flour
grain
grind
grinder
grinding
grist
gristmill
grit
hands
hard
heavy
labor
manual
meal
mechanical
medieval
mill
miller
milling
millstone
move
old
peasant
powder
production
quern
reel
rock
roll
rotate
round
rub
rye
spin
stone
turn
wheat
wheel
wooden