英文關鍵字
arm
builder
challenge
close
clothing
confident
construction
contractor
control
danger
defense
direction
engineer
factory
foreman
gear
gesticulate
gesture
gesturing
guidance
guy
hand
hands
hard
his
holding
industrial
industry
job
limit
man
men
mittens
occupation
occupational
orange
person
protection
reflective
refusal
rejection
road
safety
security
shows
sign
signal
signs
stop
stripes
uniform
vest
wearing
work
worker