对一些自制力较强的跑步者，尝试一下使用呼和吸的节奏。

For some of the more disciplined runners, try a cadence per inhale & exhale.

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目的预测海拉尔盆地呼和湖凹陷下白垩统有利储集相带和复合圈闭。

AimInteresting Cretaceous reservoir belts and complex traps are predicted in Huhehu Depression of Hailar Basin, Notheast China.

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如何计算呼和吸的时间时，我们告诉你只要保持深度的和规则的呼吸。

While some like to tell you how to count your breathing in seconds both in and out, we will just tell you to keep breathing, deep and regular.

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But it can be acquired in the air, from patients that are from- from other individuals that are infected.

天花会通过空气传播,通过病人和其他感染者呼出的空气传播

耶鲁公开课 - 生物医学工程探索课程节选