英文關鍵字
aerial
automobile
construction
copter
engineering
equipment
facilities
factory
flight
hangar
illumination
indoor
industrial
industry
inside
labourer
lamp
large
light
machine
man
manufacturing
mechanic
mechanical
metal
moscow
motion
mzsa
one
organization
panning
pano
people
person
perspective
plant
produce
production
quadrocopter
room
russia
special
technology
tool
welding
worker
workshop