英文關鍵字
accuracy
bailer
bedrock
blade
bucket
building
close
closely
communications
concrete
constructing
construction
development
dig
digger
dipper
dirt
ditch
dredge
dredger
entrenchment
excavate
excavator
fosse
foundation
ground
house
ladle
land
mole
motion
narrowly
near
nearby
peck
plot
plumbing
sap
scoop
sewerage
shovel
slow
soil
tight
tightly
tractor
trench