On the other hand, to study and master of sports-related security and self-help skills.

另一方面，学习和掌握与体育相关的安全及自救技能。

youdao

On the other hand, to study and master of sports-related security and self-help skills.

另一方面，学习和掌握与体育相关的安全及自救技能。

youdao