英文關鍵字
background
business
concept
confetti
confidential
cut
cutting
datum
destroy
document
effect
electric
element
environment
equipment
financial
garbage
greenhouse
information
jammed
junk
letters
machine
metal
object
office
paper
paperwork
pieces
pollution
preserve
protect
protection
recycle
recycling
reduce
safety
scrap
secrecy
secret
secure
shred
shredded
shredder
shredding
stationery
stuck
sucking
trash
white