英文關鍵字
arrangement
body
chemical
clinic
closeup
covid19
decontaminate
decontamination
disinfection
doctors
equipment
friction
glove
gloves
hands
home
hospital
indoors
lubricant
lubrication
medical
method
modern
nurse
nursing
part
pathogen
powder
powdered
preparation
prevention
processes
protection
refinery
sterilization
sterilize
surgery
surgical
system
technology
treatment
virus
working