英文關鍵字
using
mask
n95
covid
19
hospital
corona
virus
apprentice
blue
care
check-up
chemical
chemistry
clinic
closeup
doctor
equipment
exam
experiment
expertise
face
masks
genetic
glove
health
healthy
laboratory
medicals
medicine
nurse
occupation
operating
room
professional
protective
research
respirators
scientific
scientist
serious
staring
study
surgeon
surgery
surgical
technician
test
trainee
uniform
virtual
working