英文關鍵字
activit
activity
aquatic
asia
background
bottle
canal
care
careless
caused
chao
chaopraya
common
crassipes
damage
destroy
dirt
dirty
disaster
disgusting
disposal
ecology
ecosystem
eichhornia
environment
environmental
float
floating
foam
fresh
garbage
global
green
human
hyacinth
industrial
junk
lake
leaf
nature
outdoor
phraya
plant
plastic
pollution
poor
poverty
problem
river
sewage
substance
summer
surface
thailand
town
toxic
trash
waste
water
weed