Snowmobile

Snowmobile
Snowmobile: one of two-seated motor vehicle, with skis and a track, that travels on snow.
Handlebars: metal tube used to steer the snowmobile.
Brake handle: handle that operates the brake.
Backrest: back support.
Passenger restraint strap: handle passengers can use to hold themselves in place.
Dual seat: two-person seat.
Reflector: light-reflecting device on the back of the snowmobile.
Snow guard: part that protects the passenger against flying snow.
Sprocket: round, toothed object that turns on an axel.
Idler wheel: wheel guiding the track.
Track: jointed belt that moves the snowmobile forwards.
Shock absorber: device for reducing shocks.
Leaf spring: mechanism that gives flexibility to the movements of a vehicle.
Ski: piece of metal, curved upward at the front and that facilitates sliding on snow.
Head light: front light.
Air scoop: intake for air to be filtered.
Cab: cover of the engine compartment at the front of a snowmobile.
Windshield: front window.

Photo :

EN : Bridge structure
FR : Structure de pont
ES : Estructura del puente

Bridge 
          structure

A bridge is a structure built to span a gorge, valley, road, railroad track, river, body of water, or any other physical obstacle. Designs of bridges vary depending on the function of the bridge and the nature of the terrain where the bridge is to be constructed.