機器
achievement
attempt
background
black
breakthrough
business
cog
cogwheel
competence
contribution
desire
difficulty
dream
effort
energy
gear
gearwheel
growth
growth hacking
hack
hacking
impulse
interplay
knowledge
life
machinery
mechanics
mechanism
metallic
nickel
obstacle
overcoming
perseverance
professionalism
purpose
reciprocity
result
scratch
skill
start
steel
strategy
success
symbol
tool
victory
wheel