We inhale oxygen and exhale carbon dioxide.

我们吸入的是氧气，呼出的是二氧化碳。

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Some scientists believe that plants inhale oxygen at night and give off carbon dioxide.

一些科学家认为植物夜间吸入氧气而释放二氧化碳。

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Fred: You mean I should shrink my belly while I inhale oxygen, and extend it while exhale. Am I right?

佛瑞德：你的意思是说，当我吸气的时候，我要收紧腹部；而呼气的时候。则要放松腹部。对吗？

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Give yourself a 15-minute energy boost pre- or post-flight and inhale oxygen infused with aromas such as lavender or eucalyptus.

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Workers operate machinery from inside pressurized cabins or inhale from oxygen canisters to stave off the worst effects of altitude sickness.

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As they desperately try to breathe and pull in more oxygen, they may inhale too much salt water into their lungs and drown.

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