While the participants lay on a table with their left knee bent, their left ankle was strapped into a footplate.

这些参与者弯曲着左膝躺在桌子上，左踝被绑在踏板上。

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The person who thus addressed him was a bent and lame old man, dressed almost like a peasant, who wore on his left knee a leather knee-cap, whence hung a moderately large bell.

和他说话的是一个腰驼腿瘸的老人，穿的衣服几乎象个乡巴佬，左膝上绑着一条皮带，上面吊个相当大的铃铛。

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Exhale, keep knee bent and lower left leg until toe touches floor.

呼气，保持膝关节弯曲并且下放左腿直到脚尖接触地面。

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