英文關鍵字
engineer
industry
people
business
construction
helmet
discussion
professional
outdoors
architect
talking
engineering
worker
hardhat
urban
entrepreneur
machinery
property
housing
industrial
safety
adult
diversity
successful
day
businesspeople
caucasian
working
work
civil
building
modern
commercial
woman
female
survey
black
laptop
meeting
site
contractor
african
project
development
city