英文關鍵字
50s60s
adult
alternative
boss
businessman
caucasian
clean
contains
counting
day
efficient
electric
electrician
electricity
energy
engineer
engineering
equipment
ethnicity
expert
exterior
green
grid
inspecting
inspector
inspects
lighting
male
man
mature
metal
natural
notepad
notes
occupation
older
panel
panels
people
person
plant
politics
power
reform
side
solar
solarium
spring
station
summer
sun
sunny
technician
technology
underneath
worker
writes
writing