英文關鍵字
allergy
background
bacteria
band
black
blue
care
close
closeup
concept
contagion
coroavirus
corona
coronavirus
cough
covid
covid19
disease
disposable
dust
elastic
epidemic
equipment
filter
hand
health
hold
holding
hygiene
illness
infection
influenza
lockdown
mask
medical
medicine
mouth
personal
pollution
prevention
protect
protection
protective
quarantine
respiration
safety
sanitary
sanitation
single
surgical
use
virus