英文關鍵字
abstract
and
architecture
art
background
blade
book
bright
business
clean
closely
closeup
computer
construction
daylight
daytime
design
detail
energy
equipment
farm
helicopter
home
hovering
image
industry
information
instrument
iron
isolated
light
line
modern
nobody
office
outdoors
outside
paper
row
safety
security
shadow
shape
sheet
sky
solar
space
steel
symbol
table
technology
time
tool
wind
wood
wooden
work