英文關鍵字
abstract
black
blackboard
board
chalk
chalkboard
class
classroom
concept
destination
distance
find
gps
graphic
hike
icon
illustration
info
journey
label
line
locate
location
locator
marker
navigation
nobody
outline
peregrinate
pictogram
pin
place
point
pointer
position
positioning
school
shape
sign
symbol
table
travel
trip
voyage
white