To arch the neck and stimulate the cervical spine, lengthen the neck, drop the head back, lift the chin, and open the throat;

弯曲颈部并刺激颈椎，拉伸颈部，头向后仰，抬高下巴，打开喉咙；

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To arch the neck and stimulate the cervical spine, lengthen the neck, drop the head back, lift the chin, and open the throat;

弯曲颈部并刺激颈椎，拉伸颈部，头向后仰，抬高下巴，打开喉咙；

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