英文關鍵字
alarm
antique
art
background
clock
clockwork
close
closeup
cogs
cogwheels
concept
connection
crystal
design
detail
dirty
engine
engineering
equipment
eternity
focus
gear
idea
industrial
industry
inside
instrument
machine
machinery
macro
mechanic
mechanical
mechanism
metal
metallic
minutes
office
old
part
photo
power
precision
retro
sound
steel
teamwork
technical
technology
tick
time
turn
vintage
watch
wheel
work