We know that for most people their resonant frequency is between 7.5 and 4.5 breaths per minute.

我们知道对大多数人来说，他们的共振频率介于每分钟4.5次至7.5次呼吸之间。

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We know that for most people their resonant frequency is between 7.5 and 4.5 breaths per minute.

我们知道对大多数人来说，他们的共振频率介于每分钟4.5次至7.5次呼吸之间。

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