传统的运动鞋是要让人站立平稳，而这种圆弧底鞋子则是刻意要让人站立不稳。
Unlike traditional athletic shoes that are built to be stable, rocker-sole shoes are deliberately unstable.
凹底磨鞋可用于磨削井下小件落物以及其它不稳定落物。
The concave bottom mill shoe is used to grind downhole small objects and other unstable fallen objects.
在一开始，志愿者们穿着这种让人站立不稳的鞋表现得摇摇晃晃，只好让脚部和脚踝那些平时不怎么用到的小块肌肉也动起来，以保持平衡。
In the beginning, the volunteers wobbled in the unstable shoes, activating and strengthening small, underused muscles in the feet and ankles that stabilize balance.
当时那些参试的志愿者们评价塑身鞋的鞋底不稳定，穿着时脚下感觉与普通的鞋子不同。
Mercer said, since his volunteers commented that the toning shoes, with their bowed, unstable bottoms, felt different underfoot from the walking shoes.
当时那些参试的志愿者们评价塑身鞋的鞋底不稳定，穿着时脚下感觉与普通的鞋子不同。
Mercer said, since his volunteers commented that the toning shoes, with their bowed, unstable bottoms, felt different underfoot from the walking shoes.
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