英文關鍵字
builder
clay
concrete
construction
dig
dirt
drain
drill
drilling
engineering
excavator
foundation
ground
hole
lifting
machine
machinery
mud
pile
piles
platform
preparation
rig
soil
steel
tool
well
英文關鍵字
builder
clay
concrete
construction
dig
dirt
drain
drill
drilling
engineering
excavator
foundation
ground
hole
lifting
machine
machinery
mud
pile
piles
platform
preparation
rig
soil
steel
tool
well