英文關鍵字
accident
advice
alarm
alert
attention
background
badge
beware
button
caution
danger
dangerous
design
disable
error
exclamation
hazard
icon
illustration
importance
important
information
isolated
jeopardy
label
mark
message
mistake
note
notice
orange
peril
point
problem
red
risk
road
round
safety
security
sign
signal
stamp
stop
symbol
traffic
triangle
vector
warning
yellow