英文關鍵字
adult
bailer
big
bucket
caucasian
day
digger
dipper
document
drawing
dredge
engineer
equipment
examines
excavator
female
folder
formal
heavy
helmet
industrial
inspector
job
ladle
large
machine
manager
manual
mechanic
mine
one
orange
outdoor
outside
person
phone
plan
professional
quarry
scheme
scoop
shirt
sits
specifies
talking
technician
wide
woman
worker
young