英文關鍵字
analysis
analyzing
atomic
catastrophe
chemicals
chernobyl
close
closeup
contamination
danger
earth
ecological
ecology
environment
environmental
global
hazardous
ionizing
lab
laboratory
liquid
nuclear
ozone
poison
poisonous
pollute
pollution
problems
radiation
radioactive
radionuclide
recycle
research
sample
scientist
sediment
studies
symbol
test
testing
toxic
toxicology
tube
up
waste
weapon
woman
work
world