英文關鍵字
activity
architecture
background
blade
block
brick
bricklayer
builder
building
cement
circular
concrete
construction
cut
cutter
cutting
danger
disc
drawing
dust
electric
equipment
exterior
grinder
grinding
hand
handyman
home
house
industrial
industry
instrument
job
jobs
machine
man
manual
mason
masonry
men
metal
occupation
pavement
power
professional
reconstruction
repair
sawing
site
skill
stone
structure
technology
tool
work
worker
workman
workshop