英文關鍵字
back
backpack
boy
care
child
classmates
contactless
coronavirus
covid19
curly
cute
distance
education
elementary
epidemic
face
farewell
girl
greeting
health
kid
lockdown
mask
medical
noncontact
people
person
prevention
protection
quarantine
safety
school
schoolboy
schoolchild
schoolchildren
skate
street
student
virus
wearing
young