英文關鍵字
blue
burn
burning
care
clean
close
clouds
color
compromise
concepts
conservation
continents
danger
destructed
destruction
due
earth
ecologic
ecology
effect
environment
environmental
essential
falling
fire
flame
flames
freshness
gas
global
globe
graphic
heated
help
human
life
liquid
map
natural
nature
planet
plant
presentation
preservation
preserve
purity
range
salvation
sea
space
sphere
warming
water
wet
world