英文關鍵字
adolescent
adult
ballpoint
black
business
businessman
checklist
closeup
communication
contract
copy
desk
document
education
exam
hand
handwriting
holding
lawyer
learning
legal
lesson
letter
male
man
manager
note
office
paper
pen
person
photographer
plan
professional
school
schoolbook
sheet
sign
signature
signing
student
table
text
unknown
white
work
workplace
write