英文關鍵字
doctor
injection
syringe
treatment
virus
covid19
drug
health
illness
immunization
medicine
vaccination
disease
flu
hospital
medical
coronavirus
corona
needle
pandemic
protection
vaccine
clinic
epidemic
laboratory
research
science
therapy
closeup
nurse
2019ncov
bottle
care
dose
infection
equipment
hand
vial
injecting
liquid
scientist
concept
prevention
researcher
test
background