機器
backhoe
blue
builder
building
bulldozer
business
collar
construction
drive
driver
earthmover
education
engine
equipment
female
foreman
forklift
hardhat
heavy
helmet
industrial
industry
job
jobsite
machinery
male
man
mechanical
occupation
operator
people
person
professional
safety
shovel
teaching
tractor
trade
training
uniform
unions
vehicle
vocational
woman
work
worker
working