英文關鍵字
1080p
1920x1080
arc
attached
beam
builder
building
connection
constructing
construction
engineer
engineering
hull
industry
iron
mask
men
metal
mining
people
rail
repairing
safety
silhouette
sparks
steel
welder
welding
work
worker
英文關鍵字
1080p
1920x1080
arc
attached
beam
builder
building
connection
constructing
construction
engineer
engineering
hull
industry
iron
mask
men
metal
mining
people
rail
repairing
safety
silhouette
sparks
steel
welder
welding
work
worker