有些运动员意识到他们所选择的体育运动是非常危险的。

There are some who realize their chosen sport can be very dangerous.

youdao

没有制定规则之前，这项体育运动十分危险。

Before rules and regulations were introduced, the sport was very dangerous.

youdao

没有制定规则之前，这项体育运动十分危险。

Before rules and regulations were introduced, the sport was very dangerous.

youdao