機器
arm
athlete
biceps
black
bodybuilding
boiler
boot
brake
champion
coal
dangerous
engine
great
guy
gym
handsome
healthy
heavy
historic
iron
locomotive
look
machinist
male
man
metal
muscular
obsolete
old
oldfashioned
part
physical
power
railroad
railway
red
retro
road
shirtless
shoulders
sportsman
steam
steel
strength
strong
train
transport
wheel
white