英文關鍵字
architecture
base
bedrock
bucket
builders
building
bulldozer
clay
construction
conveying
day
development
dozer
dumper
entrenchment
foundation
helmet
ladle
load
loading
loam
master
men
orange
outdoors
pit
realestate
residential
sand
shovel
substructure
transfer
transportation
transporting
uploading
vehicles
workers
workflow
working
yellow