機器
architecture
arrange
art
black
blue
blue sky
building
caterpillar
clear sky
clound
colorful
colour
construction
crane
davit
derrick
detail
equipment
green
heavy
high
highest
industrial
industry
infrastructure
lift
line
loader
machanic
metal
order
pattern
permute
pull
pulley
red
sheave
site
sling
sort
steel
step
strech
structure
system
tackle
technology
tower
tractor
vertical
wheel tread
y
yellow
zigzag