英文關鍵字
activity
asphalt
asphalting
black
blacktopping
building
compactor
concrete
construction
equipment
exterior
gravel
heat
heavy
highway
hot
industrial
industry
lane
laying
legs
machine
machinery
outdoor
outside
patch
pave
pavement
paving
pressure
reconstruction
renewal
repair
road
roadwork
route
screed
shovel
steam
steamroller
street
technology
vehicle
work
worker