英文關鍵字
coffee
bean
roaster
roast
cooling
plate
industrial
appliance
rotating
arabica
aroma
roasted
factory
cafe
roasting
machine
robusta
production
process
black
background
seed
caffeine
preparation
brown
equipment
agriculture
gourmet
stir
mixing
manufacturing
coffeehouse
machinery
fresh
turning
business
aromatic
organic
mixer
rotation
grain
beans