Secondly, Chinese athletes comply with walking race definition in that the knee joint is unwound from touchdown to upright phases.

我国优秀竞走运动员着地瞬时至垂直瞬时膝关节是伸直的，符合竞走的定义；

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First ", said Charlotte, "I dive at him." she plunged headfirst toward the fly." As she dropped, a tiny silken thread unwound from her rear end.

“首先，”夏洛说，“我向它潜下去。”它头在前向苍蝇扑下去。它下来时，一根细丝从它后面吐出来。

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So Tom unwound the thread from one of his needles, and each boy pricked the ball of his thumb and squeezed out a drop of blood.

31于是汤姆拿出一根针，去掉了线。两个孩子各自往大拇指上戳了一下，然后挤出两滴血来。

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So Tom unwound the thread from one of his needles, and each boy pricked the ball of his thumb and squeezed out a drop of blood.

31于是汤姆拿出一根针，去掉了线。两个孩子各自往大拇指上戳了一下，然后挤出两滴血来。

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