英文關鍵字
blocks
tower
fun
floor
creative
reaction
falling
dominoes
connection
hand
development
brick
cube
construction
build
work
structure
strategy
step
stairs
staircase
stack
solution
progress
problem
plan
concept
business
wooden
background
white
line
group
risk
block
toy
wood
game
play
success
red
metaphor
different
symbol
effect
row
domino
education