機器
accessory
attach
background
bind
black
business
clip
closeup
college
color
device
documents
education
equipment
fastener
female
gun
hand
indoors
join
mechanical
metal
office
paper
paperwork
person
plastic
push
school
secretary
sheet
staple
stapler
stapling
stationary
stationery
steel
study
supply
table
tool
university
using
white
woman
work
workplace
workspace