straight back close buttocks
Pronunciation of the former experience of "empty head" "straight back close buttocks" "relax chest," is to get rid of prejudice to the position to breathe at the same time will also affect air atmosphere.
基于1个网页-相关网页
straight back close buttocks
背部挺直，臀部紧贴
以上为机器翻译结果，长、整句建议使用 人工翻译 。