英语语法分析

The psoas (major on the right) is a very strong and powerful muscle.

腰肌（主要是右侧）是非常强壮有力的肌肉。

The pelvis is kept balanced because the psoas flexes the thigh, and the glutei make the thigh lengthen, or extend.

骨盆保持着平衡，因为腰肌使大腿前侧屈曲，臀肌使大腿前侧伸长或者伸展。

And a released, flowing psoas, combined with a stable, weight-bearing pelvis, contributes to the sensations of feeling grounded and centered.

释放儿活动自由的腰大肌与稳定承受重量的坐骨盆是我们内在安定安稳感的来源。