Biathletes wear a form of cross country ski called a skate ski.
Cross-country touring skis are longer, wider and more limber than skating skis, and the edges are different because tourers push off from the part of the ski under their boot and skaters dig in the edge. It would be very awkward to skate on a touring ski, and equally awkward to tour on a skating ski.
No. Apostrophes are almost never used to form a plural.The spelling ski's is a possessive noun, e.g.He has to be careful of his left ski's position on the last turn.His right ski's color is black and his left ski's color is white.
The plural form for the noun ski, or any noun ending with -ski, is skis (-skis).
No, the plural form skis is a regular plural for the singular noun ski. A regular plural is a noun to which an -s or an -es is added to form the plural. An irregular plural is plurals formed in some other way.
Normal classic skis should be about 25 cm higher than your body height.
Ski wax lets the skis glide over snow.
you put skis on your feet, on a ski slope and you ski down it.
skisskis
You can snow ski or water ski, but you are always ON the same thing- skis!
It is to skate.
you use skis to ski on snow and when you do ski jumping