英文關鍵字
cable
cables
city
coiled
dark
elevator
hang
hanging
hoist
hoistway
infrastructure
machinery
maintenance
metal
metallic
safety
shaft
skyscraper
suspended
suspension
thick
traction
traveling
vertical
weigh
weight
英文關鍵字
cable
cables
city
coiled
dark
elevator
hang
hanging
hoist
hoistway
infrastructure
machinery
maintenance
metal
metallic
safety
shaft
skyscraper
suspended
suspension
thick
traction
traveling
vertical
weigh
weight