英文關鍵字
activity
angling
catch
closeup
coastline
contaminated
danger
dangerous
dead
death
decay
dirty
disaster
disease
ecology
ecosystem
emission
epidemic
fish
fishery
fishing
harmful
illegal
industry
infection
lake
leisure
lifeless
lure
nature
poacher
poaching
polluted
pollution
pond
problem
river
rotten
sea
sewage
species
surface
swimming
tragedy
trap
unhygienic
waste
wastewater
water