機器
2530
accurate
adult
american
attentive
builder
careful
caucasian
cement
complex
concrete
constructing
detail
drum
guy
hardhat
indoors
industrious
industry
instruments
job
male
man
mixer
mixing
neatness
one
person
practice
precise
profession
quality
safe
skill
skilled
tools
uniform
unit
use
vocation
white
worker
working
workplace
workshop
young