英文關鍵字
air
bacteria
beauty
black
breathes
caucasian
caution
clean
concepts
corona
coronavirus
countryside
covid19
danger
dangerous
disease
embrace
enjoying
environment
environmental
environmentalist
epidemic
face
flu
gloves
guy
happy
health
illness
infection
male
man
mask
medical
medicine
nature
pandemic
person
protection
protective
quarantine
safety
virus
young