英文關鍵字
absorbs
beautiful
broken
brown
colorful
concept
day
destroying
destruction
diagram
drawing
earth
eco
ecology
environment
global
globe
graphic
green
growth
heat
hole
human
industrial
industry
isolated
layer
life
light
nature
ozone
peace
planet
planets
pollution
radiation
refers
region
shield
sky
space
spring
star
stratosphere
summer
sun
sunrise
warming
world