adult

apprenticeship

businesswoman

caucasian

communication

construction

discussion

distribution

education

electricity

electronic

energy

engineer

engineering

foreman

girl

group

helmet

indoors

industrial

industry

internship

line

machine

male

man

management

manual

meeting

occupation

office

outdoors

packing

people

production

school

security

tablet

team

teamwork

technology

thirties

trainee

trainer

training

two

woman

worker

young

youth