英文關鍵字
background
bacteria
blue
breath
brown
care
clinic
corona
coronavirus
cough
covid19
danger
disease
doctor
ecology
epidemic
equipment
face
flora
green
health
hospital
hygiene
illness
infection
influenza
macro
mask
medic
medical
medicine
mouth
natural
nature
outbreak
outdoor
pandemic
pollution
protection
quarantine
respirator
respiratory
sick
virus