英文關鍵字
bacteria
blond
child
childhood
computer
coronavirus
covid19
desk
distance
doing
education
elearning
epidemic
exam
flu
girl
glasses
home
homework
illness
indoors
infection
internet
isolated
kids
laptop
learning
lesson
little
mask
online
orvi
pandemic
pupil
quarantine
remote
respiratory
safety
school
schoolgirl
sickness
sitting
social
student
studying
training
virtual
virus