提高体育技术的英语表达可以是以下几个短语或句子：
- Enhance athletic skills
- Improve sports techniques
- Boost sports performance through skill development
- Refine athletic abilities
- Upgrade sports proficiency
- Master new sports techniques
- Elevate sportsmanSHIP
- Optimize sports performance by honing techniques
- Develop advanced sports skills
- Perfect sports performance with better techniques