英语翻译如题请大家不要直接用翻译器翻译 有很多语法错误 极限运动的项目许多都是近几十年刚诞生的、方兴未艾的体育项目,根据

Extreme sport is a emerging sport and many projects of it are developed in recent decades,which can be divided into two categories：the summer projects and the winter projects according to season,and the sport involving the "sea,land and air" multidimensional space

Most of extreme sports is young and still in growth,
classified into sports in summer and winter in regards of seasons,
and into sports of aquatic, outdoor and air in regards to the fields to take place.

Many of extreme sport projects was born in recent decades and they're ascendant sports. According to seasons they can be divided into two categories, summer and winter.The sports field involve "sea, land, empty" multidimensional space.