The robotic hand is controlled by compressed air, varying the strength of its grip without the use of other motors, in the same way human grip relies on elastic ligaments to help the fingers curl.
这机器人的手，是由压缩空气来控制的，握力的变化不是依靠另外的马达，类似于人的手依靠有弹性的韧带来带动手指的伸屈。
See, if your field was conservative — 0 if a curl was zero then the right-hand side would just be zero.
如果场是保守的-，如果旋度是0，那么右手边的结果也会是。
Her long fingers curl easily around my hand and I nod my head slowly, smiling.
她那细长的手指很轻易地就拢住了我的手，我微笑着慢慢点了点头。
She put up her hand and smoothed back the curl.
她抬起手来，把鬈发向后按了按。
But researchers at the University of Utah point out that they developed around the same time as humans acquired the ability to curl their hand into a club-like fist.
但犹他大学的研究者们指出，这种现象是和人类能够握拳这一现象同时出现的。
With one arm in the same starting position as above, curl the outstretched hand into the palm of the other hand, gently folding the wrist forward.
起始动作如前，用另一只手的手掌握住并柔和的向前弯曲手腕。
Butt researchers at the University of Utah point out that they developed around the same time as humans acquired the ability to curl their hand into a club-like fist.
但犹他大学的研究者们指出，这种现象是和人类能够握拳这一现象同时出现的。
Butt researchers at the University of Utah point out that they developed around the same time as humans acquired the ability to curl their hand into a club-like fist.
但犹他大学的研究者们指出，这种现象是和人类能够握拳这一现象同时出现的。
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