双语例句
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At the front of the pelvis is the psoas and at the back, the glutei or buttock muscles.
位于骨盆前侧的是腰肌，在后侧的是臀肌。
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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。