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.
现代研究发现，传统体育运动在改善糖尿病危险因素、调节血糖、减少并发症等方面有较好的疗效，适宜推广并进一步深入研究。
Modern research find that traditional PE can improve diabetes risk factors, regulates blood sugar and reduce complications, appropriate to promote and further in-depth study.
同样，轮滑也是危险的体育运动，因此您应该接受(注意)涉及自己的所有风险。
Well, skating is a dangerous sport, and so you agree to accept all risks involved yourself.
正因为有危险，体育运动才更有趣。
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.
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.
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