英文關鍵字
activity
asphalt
asphalting
bitumen
black
building
city
construct
construction
constructor
engineering
gravel
horizontal
industrial
industry
job
labor
labour
labourer
man
manual
new
occupation
outdoors
pavement
paving
people
photography
profession
railroad
railway
repair
road
roadwork
shovel
site
street
team
teamwork
tools
two
urban
work
worker
workers
workforce