那机会只有一次怎么表达？

Hello,everyone i have a bicycle i used ,only i have used 3 times .absolutely is like new .the branch is decathlon that is fairy useful and have various funtion .When you are on vacationes you can take on bicycle to play on other place or workout.in the other hand ,It will save you money on transportation fee. Meanwhile,The bicycle is conveniente to have a class when you can not arrive puntually at class. that it save your time to do more things. the importan notice is that the price just $50 and you can get the bicycle . the chance only has one time ,if you don't buy it  you will regret for it