英文關鍵字
alert
alertness
animation
answer
answers
attention
background
beware
bouncing
caution
cgi
communicating
communication
communications
concept
concepts
danger
design
dot
exclamation
falling
graphic
help
icon
idea
illustration
info
information
isolated
letter
loop
looping
mark
marks
message
point
problem
problems
punctuation
red
seamless
shape
sign
solution
symbol
text
warn
warning
white