英文關鍵字
abstract
and
anonymous
backdrop
background
bank
banking
banner
bit
bitcoin
black
blackboard
board
both
boxes
buy
chalk
chalkboard
checking
concept
creativity
crypto
cryptography
draw
drawing
economy
electronic
eraser
exchange
female
finance
gold
hand
idea
information
internet
letter
machine
market
money
off
rich
simple
sketch
text
trade
virtual
white
wipe
woman
womans
write
writing