英文關鍵字
binder
binders
book
business
busy
concept
contract
document
documents
education
file
files
folder
folders
hand
hands
information
knowledge
learn
learning
life
note
notebook
notes
occupation
office
open
organization
page
pages
paper
papers
reading
research
ring
school
schoolwork
searching
student
studies
studying
supplies
supply
turning
work
worker
working