良好的姿势对于预防背痛至关重要。

Good ___posture is essential for preventing back pain.

多年的伏案工作导致他的姿势不良。

Years of working at a desk led to his poor ___posture.

瑜伽教练强调了在练习体式时保持正确姿势的重要性。

The yoga instructor emphasized the importance of correct ___posture during the poses.