aluminum
アルミニウム
background
care
clean
cloth
clothesline
clothespin
colorful
corona virus
coronavirus
cotton
covid19
disease
epidemic
fabric
flu
hang
health
health care
healthy
hygiene
hygienic mask
infection
influenza
many
mask
material
medical
object
outbreak
outdoor
prevention
protect
protection
protective
protective mask
safety
sunlight
virus
white