英文關鍵字
abstract
blackboard
blank
business
characters
dimensional
empty
expression
figure
horizontal
isolated
one
people
person
presentation
shape
showing
stick
table
teaching
three
unrecognizable
white
英文關鍵字
abstract
blackboard
blank
business
characters
dimensional
empty
expression
figure
horizontal
isolated
one
people
person
presentation
shape
showing
stick
table
teaching
three
unrecognizable
white