英文關鍵字
accident
alarm
back
break
build
builder
closeup
cold
construct
construction
day
dig
dirt
disaster
electric
emergency
equipment
heating
hole
industry
labor
large
laying
leak
leakage
man
master
men
outdoor
outdoors
outside
people
pipe
pipes
pit
plumber
polypropylene
power
repair
service
site
street
supply
system
tool
water
weld
winter
work
worker