英文關鍵字
drilling
metal
pipe
drill
tool
equipment
hole
industrial
factory
steel
closeup
work
instrument
iron
machine
production
professional
sharp
bit
detail
spiral
craft
construction
macro
object
dust
turn
curling
motion
rotation
bore
shiny
speed
tube
device
filing
square
element
shaving
auger
builder
metalwork
outlet
day
outdoors