英语语法分析

Another issue that is commonly missed is that the psoas has a partner in crime - iliacus.

另一个我们通常都忘了的问题：腰肌还有一个帮凶—髂肌。

The principal muscles involved in hip flexion are the psoas and the iliacus, collectively known as the iliopsoas.

主要涉及肌肉，在髋关节屈曲的腰肌和髂，统称为髂。

Also remember that it might be the iliacus that's causing the problem, so make sure to attend to it's needs as well.

同时请记住，髂肌也可能导致成绩的缘由，所以也要确保留意到髂肌。