Methods HLA-B27 detection was made in 328 patients with AS, 1113 patients with waist-back-leg ache and 40 healthy individuals.

方法：应用流式细胞仪法对328例AS患者1、113例腰背腿疼患者和40例健康体检人员进行了HLA-B27抗原检测。

youdao

Pitchford points out several form faults: "You want to keep your back straight and not allow the knee to drift forward ahead of the stance leg.

Pitchford指出许多种错误动作： “你应该保持背部挺直，膝盖不应该向前超过支撑腿。

youdao

As you stand, maintain the natural curve in your lower back and keep your core muscles tight. Use your leg muscles - not your back - to lift the object.

在你站起来的时候，继续保持腰背部的自然曲线，保持收紧你的核心肌肉。用你的腿部肌肉——不是背部——去抬起物品。

youdao

With incremental execution, the dance's signature flipped-up-and-back flexed-leg-and-foot pose looked less like a kicked up heel than a pretty and preened piece of plumage.

WSJ: Cambodia's Cultural Crown Jewel | Royal Ballet of Cambodia | Brooklyn Academy of Music | By Robert Greskovic

But the young seamer had the nerve to send down a slower ball, and it completely deceived the left-hander to knock back leg-stump.

BBC: S Africa top rankings after win

That was in the spring of 1986 when Barcelona lost the first leg of its European Cup semifinal to Gothenburg of Sweden 3-0, but stormed back to win the second leg 3-0 at Camp Nou.

WSJ: Barcelona Has to Pick Itself Up