機器
apprentice
apprenticeship
carpenter
carpentry
caucasian
clipboard
course
craftsman
craftsmanship
education
electric
equipment
factory
female
front
goggles
group
hispanic
indoors
industry
instructor
learning
machinery
machinist
male
manufacturing
men
occupation
operating
people
plane
professional
protection
safety
talking
teaching
together
trainee
trainer
training
twenties
two
view
women
wood
woodwork
worker
working
workshop