英文關鍵字
activity
asphalt
asphalting
car
city
cityscape
closeup
cloth
coating
cold
conveyor
crawler
crush
cut
diamond
dismantling
equipment
europe
fragment
grind
highway
hole
hot
industrial
industry
installation
layer
machinery
mechanical
mechanism
method
milling
motorway
move
old
remove
removing
repair
replace
road
site
spring
street
tape
tool
tractor
unit
work
yellow