英文關鍵字
aerial
chimney
industrial
factory
pollution
smoke
flue
stack
gas
climate
industry
drone
metallurgical
steel
aluminum
metal
copper
serbia
fumes
chemical
iron
chemistry
pollute
atmosphere
contamination
dioxide
exhaust
release
warming
energy
business
global
vapor
climnate
change
metallurgic
air
environment
oxygen
fume
planet
ecology
thermal
emission
toxic
heavy
economy
facility