英文關鍵字
abstract
animation
attention
background
banner
barrier
black
design
error
exclamation
flat
graphic
graphics
information
loop
mark
motion
pictogram
point
protect
protection
secure
set
sign
signal
stop
symbol
texture
triangle
triangular
web
英文關鍵字
abstract
animation
attention
background
banner
barrier
black
design
error
exclamation
flat
graphic
graphics
information
loop
mark
motion
pictogram
point
protect
protection
secure
set
sign
signal
stop
symbol
texture
triangle
triangular
web