对身体条件最苛求的泳姿，蝶泳的特色是两臂同时越过头顶结合海豚式打腿。

The most physically demanding stroke, the butterfly features the simultaneous overhead stroke of the arms combined with the dolphin kick.

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第3章涉及的是文化在身体方面的反映：触摸、手势、姿式、凝视(眼睛的语言)。

Chapter 3 deals with physical aspects of culture: touch, gesture, posture, and gaze (the language of the eyes).

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蝶泳：一种泳姿。即采用俯卧姿势，双臂同时在水面之上前挥划水，结合身体做海豚式打水。

Butterfly: a stroke made in the prone position where both arms are lifted simultaneously out of the water and flung forward, in combination with the dolphin kick.

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