英文關鍵字
activist
bag
clean
collect
concept
container
coronavirus
covid
covid19
damage
dirty
discarded
eco
ecology
ecosystem
environment
environmental
equipment
garbage
gloves
hand
health
mask
medical
nature
outdoor
pandemic
plastic
polluted
pollution
problem
protect
protection
recycle
recycling
refuse
rubbish
summer
trash
unrecognizable
used
virus
volunteer
volunteering
waste