英文關鍵字
asphalt
asphalting
bitumen
black
construction
industry
machine
machinery
material
pavement
road
roller
rolling
street
surfacing
tarmac
video
workers
works
英文關鍵字
asphalt
asphalting
bitumen
black
construction
industry
machine
machinery
material
pavement
road
roller
rolling
street
surfacing
tarmac
video
workers
works