英文關鍵字
asphalt
block
build
building
cavity
concrete
construction
contractor
cork
dig
digging
dirt
dirty
engineering
excavate
excavated
excavation
ground
heap
industrial
industry
lied
massive
middle
passersby
people
person
piece
pieces
pipe
progress
red
road
safety
scoop
sidewalk
silhouette
site
stretched
stripe
stripped
system
tape
tapes
tightened
trench
walk
warning
white
work