英文關鍵字
account
activity
background
balance
bank
banking
bill
budget
business
businessman
calculate
calculation
calculator
caucasian
chromakey
closeup
concept
data
digital
display
earnings
economy
education
electronic
equipment
executive
figures
finance
financial
finger
green
hand
human
investment
keyboard
macro
male
mathematics
multiplication
number
office
push
research
science
subtraction
table
technology
white
work