英文關鍵字
waste
pollution
dirty
trash
glove
mask
garbage
stream
medical
blue
protection
rubbish
environment
ecology
plastic
nature
coronavirus
disease
pandemic
recycling
virus
water
infection
safety
pile
dangerous
flu
hospital
illness
medicine
outbreak
recycle
protective
health
disposable
coast
beach
outdoor
sea
cleaning
contamination
disaster
emergency
epidemic
floating
problem