英文關鍵字
24h
always
answer
anytime
ask
assistance
assistant
background
black
blackboard
business
call
center
chalk
chalkboard
chat
communication
contact
customer
day
faq
handset
help
helpdesk
helpline
hotline
icon
info
information
letter
line
message
online
open
pattern
phone
question
service
seven
support
symbol
talking
telephone
text
time
week