英文關鍵字
50s
apprentice
apprenticeship
boy
caucasian
engineer
engineering
equipment
ethnicity
factory
fifties
indoors
industry
learning
lockdown
machine
machinery
male
man
manual
manufacturing
mask
mature
medium
men
occupation
operating
overalls
people
person
precision
protective
shot
skilled
teaching
teen
teenage
teenager
tig
together
trainee
training
two
use
welder
welding
worker
working
workman
workshop
years
young