I step up the breathing rate -- timing the contraction and relaxation of chest muscles.

我增加呼吸率 -- 调节胸部肌肉的收缩和舒张的速率.

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An increased heart rate and breathing rate are common, too.

心跳加快呼吸频率升高也很正常.

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The breathing rate is faster in children and women than in men.

儿童和女性的呼吸节律比男性快.

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Breathing rate increases to 50 % above normal level. Prolonged exposure can cause headache, tiredness.

呼吸频率增加到正常水平以上50%. 持续暴露会导致头痛 、 疲劳.

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That is, it depends on how deep you dive ( as well as your breathing rate ).

也就是要视你下潜的深度而定 ( 以及呼吸的频率 ).

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Alcohol can lower blood pressure and decrease your breathing rate to the point of unconsciousness.

含酒精饮料会降低血压和呼吸频率,直至意识不清.

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