...余5对即所谓的假肋( false rib)，肋软骨（第8~10）各与其上一肋软骨连接；第11、12肋的前端游离，有时称为浮肋（floating ribs）。第10肋也可能为浮肋，其发生率在不同种族为350/0~ 700/0。
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也同时收浮肋进入背部的核心并向骨盆的方向下沉。
Also draw your floating ribs in the middle of your back downward toward your rear pelvis.
中等程度的动作是从浮肋处扭转，前面的膝盖向外旋转。
A more intermediate action is to twist from your floating ribs back and your front knee outward.
尤其是指与英国垂直式风格有关的一种扇形拱顶的交叉拱肋在接合点的拉长浮凸饰（雕刻的楔石）。
Especially an elongated boss (carved keystone) at the junction of the intersecting ribs of the fan vaulting associated with the English Perpendicular style.
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