给他这种级别的官员鞠躬，腿要绷直，然后俯身将手指伸到小腿中部。
For an official of his rank, this is a stiff-legged stoop, with fingers outstretched to mid-shin.
房子实在陈旧，地板从墙脚向房间中部往下倾斜，倾斜的角度很大，我只好用几块小木片垫在小餐桌的桌腿下。
The house was so old that the floors sank from the walls to the middle at an angle so pronounced I had to put little wooden blocks under the inside legs of our small dining table.
利用模态综合法描述了柔性支腿的变形，探讨了建模过程中部件模态集的选取原则及正交化处理技术。
Deformation of flexible legs is defined by mode synthesis method, and the principle of mode selection and orthogonalization during modeling are discussed.
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