英文關鍵字
aerial
algae
amazing
apocalyptic
aquatic
beautiful
chemicals
clay
colored
danger
dangerous
day
degradation
dunaliella
ecology
ecosystem
environment
flying
geographic
global
green
lake
landscape
log
minerals
mud
natural
nature
one
picturesque
pink
poisoned
problem
protection
radioactive
reservoir
salina
shore
summer
top
touristic
toxic
tranquility
travel
unusual
waste
water
wonder
wonderful