英文關鍵字
child
close
computer
concept
confine
coronavirus
covid
desk
determination
disease
education
effort
female
finger
girl
hand
healthy
home
indoor
infection
influenza
internet
keyboard
learner
learning
lifestyle
mask
online
outbreak
people
protection
protective
quarantine
safety
schoolgirl
situation
student
study
table
technology
typing
virus
working
young