英文關鍵字
abstract
algae
background
bloom
blooming
bodies
color
contaminated
contamination
dead
deficiency
dirt
dirty
ecology
environment
environmental
flora
global
green
harmful
hazard
lake
landscape
nature
outdoor
oxygen
pattern
phytoplankton
plankton
plant
polluted
pollution
pond
poor
problem
reproduction
river
scarcity
slime
summer
surface
swamp
texture
toxic
water