英文關鍵字
agricultural
agriculture
architecture
arm
building
business
cloud
con
confident
construction
contractor
corn
design
designer
development
drying
employee
engineer
engineering
equipment
foreman
grains
helmet
hopper
industrial
industry
job
maize
male
master
midwest
people
plan
professional
project
protection
rice
safety
silo
site
standing
structure
work
worker