英文關鍵字
attractor
circling
device
draw
ellipse
experiment
experimentanium
frame
grapher
indoor
inside
line
logger
mechanic
mechanism
museum
nobody
noone
nopeople
object
oval
page
paint
paper
path
pen
pendulum
physics
piece
plotter
recorder
register
rotates
round
spins
stand
surface
sway
swing
trajectory
turn
write