英文關鍵字
worker
steel
pole
hole
construction
wet
ground
concrete
liquid
cement
fresh
measure
pouring
industry
equipment
dirty
development
labor
mix
pour
industrial
surface
work
job
tube
mixing
英文關鍵字
worker
steel
pole
hole
construction
wet
ground
concrete
liquid
cement
fresh
measure
pouring
industry
equipment
dirty
development
labor
mix
pour
industrial
surface
work
job
tube
mixing