英文關鍵字
adult
cell
clothing
day
engineer
foreman
gear
grass
guy
hard
helmet
in
iron
male
man
near
occupation
on
outdoors
people
person
phone
professional
protection
rail
railroad
railway
safety
sky
summer
tablet
the
track
transport
with
worker
英文關鍵字
adult
cell
clothing
day
engineer
foreman
gear
grass
guy
hard
helmet
in
iron
male
man
near
occupation
on
outdoors
people
person
phone
professional
protection
rail
railroad
railway
safety
sky
summer
tablet
the
track
transport
with
worker