Coughs typically last around one-quarter of a second, comprising a sharp intake of breath, a silent exhalation and then the complex burst of sounds that makes the cough noise.
典型的咳嗽会持续约四分之一秒，包括刺耳的吸气，安静的呼气，然后是形成咳嗽噪声的复杂爆裂声。
The second she saw it, she took a deep breath. “Young man, ” she said, “this letter was the last contact I had with Michael.”
在看到信的那一刹那，她深吸了一口气，说：“年轻人，这封信是我最后一次与迈克尔联系。”
Repeat Step 2 but this time, do it moderately fast with holding the breath for only a split second. You may need to increase the force.
重复第二步，但是这次适当快一点屏住呼吸仅一小会儿。你可能需要加大力。
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