英文關鍵字
activity
asia
asian
check
constractors
construction
discussing
discussion
distribution
energy
engineering
fabric
factory
five
foreman
gasoline
hardhat
industrial
industry
labor
maintenance
male
manager
manufacturing
mechanic
meeting
metal
metalworker
oil
oilindustry
oilrefinery
outdoor
people
person
plant
power
repairman
safety
steel
technician
technology
vest
warehouse
work
worker
workers
working
workplace