热心网友
switchback，scenic railway，big dipper，roller coaster
热心网友
switchback，scenic railway，big dipper，roller coaster
热心网友
Roller coaster
热心网友
Roller coaster
热心网友
Lead the mountain car
热心网友
roller coaster
热心网友
roller coaster
热心网友
roller coaster (an amusement railroad in which cars coast by gravity over a long winding track, with steep pitches and ascents)
热心网友
Roller coaster
热心网友
switchback
热心网友
Roller coaster
热心网友
roller coaster
热心网友
Roller Coaster