created sense approved 挺腰 · tǐngyāo · arch back
挺腰
tǐngyāo
arch back
to arch one's back or thrust the waist forward or upward
做瑜伽时，这个动作需要你缓慢地向上挺腰。
created sense approved 挺腰 · tǐngyāo · straighten back
挺腰
tǐngyāo
straighten back
to straighten one's back, often to improve posture or show confidence
士兵们个个挺腰收腹，显得非常有精神。