英文關鍵字
adult
alternative
black
boss
businessman
caucasian
clean
contains
day
efficient
electric
electrician
electricity
energy
energyefficient
engineer
engineering
ethnicity
expert
exterior
fifties
generator
glass
green
grid
inspector
inspects
lighting
male
man
mature
metal
natural
notepad
notes
occupation
older
pad
panel
panels
paper
people
person
plant
politics
pouring
power
red
reform
sixties
solar
solarium
spring
station
summer
sun
sunny
technician
technology
wine
worker
writes
writing