biathlon造句

1、Who were the only people allowed to compete in biathlon until 1992?
1992年为止，滑雪射击只允许什么人参加？

2、The coaches of China's Biathlon should perfect of the system of training ;
完善我国冬季两项教练员的培养体制；

3、The system of scientific research of China's Biathlon imperfect ;
我国冬季两项运动科研体系不完善；