英文關鍵字
toxic
water
bloom
pollution
algae
algal
lake
nature
plankton
pollute
polluted
poor
ecology
problem
river
background
bay
blooming
blooms
bluegreen
bodies
global
green
contaminated
contamination
dangerous
dead
deficiency
destruction
dirt
dirty
disaster
environment
environmental
harmful
hazard
scarcity
sewage
smell
stagnant
stagnation
summer
surface
swamp
pond