英文關鍵字
adult
aged
bearded
business
businessman
call
caucasian
cell
cellphone
client
colleague
communication
connection
conversation
dark
desk
discussion
doctor
document
grayhaired
handsome
holding
home
indoor
male
man
mature
mobile
motion
occupation
office
older
paper
patient
pen
people
phone
portrait
professional
psychologist
psychotherapist
room
senior
sitting
slow
smartphone
talking
technology
telephone
working
writing