| 1 | Someone panicking can take as many as 30 breaths a minute. This is "hyperventilation". | |
| 2 | We provide the most ideal equipment of cool down and aeration in China. | |
| 3 | "Okay." She murmured. She was breathing so fast that Julia thought she was hyperventilating. | |
| 4 | People often hold their breath, or take in too much oxygen and hyperventilate. | |
| 5 | So the windows do not have to operate to permit natural ventilation. |