英文關鍵字
action
adult
and
button
cane
clip
company
concept
conditions
contains
contemporary
corridor
employed
employees
equipment
exploitation
factory
groups
hall
industry
insulation
interior
long
machine
machinery
machines
manpower
manual
manufacture
material
mechanical
motion
occupation
operation
operator
part
people
person
place
power
production
push
real
safety
senior
shot
teamwork
technology
the
time
unrecognizable
video
women
work
worker
workers
working