英文關鍵字
alternative
battery
business
caucasian
check
checks
confident
construction
defects
ecology
electrician
electricity
employee
energy
engineer
environmental
future
green
hand
hard
hardhat
hat
helmet
his
industry
innovation
inspection
installation
job
maintenance
male
man
outside
panel
panels
person
photovoltaic
plant
portrait
power
production
profession
professional
project
renewable
safety
sky
solar
stairs
standing
stands
takes
technician
technology
worker