機器
above
activity
assist
attached
barrow
building site
busy
carry
cart
cement
civil engineering
concrete
concreting
construction
crane
edifice
erector
hand
help
hoist
hoisting
hold on
hook
industrial
industry
load
machinery
man
manage
manually
mason
masonry
mixer
mortar
people
pour
pull
push
scaffold
site
team
teamwork
tipping
transport
transportation
under
wheelbarrow
work
worker