英文關鍵字
abstract
arrow
background
blue
business
center
chart
circulation
color
connection
continuity
control
cycle
development
diagram
direction
eco
ecological
ecology
energy
finance
flow
graph
graphic
innovation
investment
life
lifecycle
loop
management
motion
process
recycle
recycling
repeat
repeating
reuse
rotate
rotation
schema
step
stock
system
teamwork