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| the air that is inhaled and exhaled in respiration | |||
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V1 |
| breathe easily again, as after exertion or anxiety | |||
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V1, V2 |
| draw air into, and expel out of, the lungs | |||
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| pertaining to respiration | |||
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V1 |
| undergo the biomedical and metabolic processes of respiration by taking up oxygen and producing carbon monoxide |