英文關鍵字
excavator
operator
skinner
earthmover
shovelman
man
cabin
builder
worker
workplace
driving
sit
men
backhoe
caucasian
levers
control
inside
sunglasses
helmet
vest
retroreflective
safety
heavy
excavatordriver
professional
industry
machinery
outdoors
occupation
vehicle
machine
tractor
mechanical
contractor
skill
hand
reflective
clothing
bulldozer
tiller
transmission
gear
gearbox
switch
switchbox
orange
driver
gearshift