英文關鍵字
agriculture
autumn
bio
cereal
cob
collecting
corn
countryside
crop
disease
drought
dry
environment
ethanol
farm
farmer
fertile
field
food
fuel
gather
grain
ground
grown
hand
harvest
healthy
hearb
husk
industry
ingredient
land
leaf
maize
mature
natural
nature
nutrition
organic
pick
plant
plantation
popcorn
produce
ripe
row
rural
season
seed
soil
stalk
summer
sweet
vegetable
vegetarian
wind
work
yellow