英文關鍵字
brain
brainstorm
brainstorming
breakthrough
clockwork
cogitation
cogs
concepts
contemporary
eureka
frontal
gears
gray
grey
idea
illustrating
inspiration
lightbulb
lobe
looping
matter
mechanical
mind
moment
neuron
people
pondering
profile
seamless
sky
spark
steampunk
thinker
thinking
thoughts
wheels