英文關鍵字
above
absorbing
access
anchor
arrest
assemblers
blue
building
climbing
construction
descending
elevation
energy
equipment
fall
floor
gloves
ground
hang
hazard
height
helmet
installers
job
knots
man
manufacturers
mountaineer
occupation
out
outside
points
protection
protective
repair
risk
rope
safety
skyscraper
techniques
the
tools
training
wall
washer
window
wires
worker
works