英文關鍵字
background
blade
business
classified
confidential
cut
danger
dangerous
data
destroy
destruction
disposal
document
equipment
garbage
grind
identity
industry
information
knife
machine
machinery
metal
office
paper
paperwork
personal
precaution
privacy
private
protection
recycle
recycling
rip
safeguard
safety
scrap
secret
security
sheet
shred
shredded
shredder
shredding
solid
steel
teeth
theft
trash
waste