英文關鍵字
digital
signature
mobile
contract
money
payment
business
acception
document
hand
businessman
pen
tablet
sign
online
agreement
technology
white
stylus
financial
write
screen
desk
background
corporate
internet
office
table
manager
official
workplace
worker
work
electronic
signing
finance
professional
holding
person
touchscreen
writing
data
macro
cell
cellphone
design