英文關鍵字
alpha
animated
animation
business
care
change
channel
community
concept
concepts
conceptual
conservation
corporate
earth
eco
ecology
energy
environment
environmental
friendly
global
globe
green
health
hemisphere
international
isolated
issues
lower
natural
nature
planet
protect
recycling
renewable
resources
responsibility
safe
social
sustainable
symbol
teamwork
togetherness
tree
wind
windmills
world