拱背伸展（基础）
- JA
- 背伸び（アーチ）（基本）
- EN
- Arched Back Stretch (Base)
- KO
- 등 구부려 기지개 (기본)
英文描述，可直接放进提示词
standing on all four straight legs with the back arched high into a rounded hump at the middle: all four paws planted close together, front legs and hind legs straight and vertical, tail raised and curving down at the tip, head lowered slightly below the shoulders, ears up; relaxed stretch, not hissing
