Stand evenly on both feet, clasp hands behind your back and squeeze shoulder blades together to open your chest.

双脚着地平稳站立，双手紧扣于后背并将肩胛骨向后推挤做扩胸运动。

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Stand evenly on both feet, clasp hands behind your back and squeeze shoulder blades together to open your chest.

双脚着地平稳站立，双手紧扣于后背并将肩胛骨向后推挤做扩胸运动。

youdao