此外，尽管二氧化碳排放交易市场的确存在，却没有展示出其应有的大规模减少碳排放的潜力，其大规模推广的可能性目前来看也极小。

And besides, though carbon markets do now exist, they have yet to demonstrate an ability to reduce emissions in a big way, and their large-scale expansion currently looks highly unlikely.

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此外通过数据呈现的波形曲线显示出其他分子的存在，有可能是二氧化碳，二氧化硫，甲醇或更为复杂的含碳分子。

In addition, there were squiggles in the data that indicated other molecules, possibly carbon dioxide, sulfur dioxide, methane or more complex carbon-based molecules.

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气孔是二氧化碳进入而氧气和水蒸气逸出的开口。

A stoma is an opening through which carbon dioxide goes in and oxygen and water vapor escape.

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The main goal of the respiratory system is to bring fresh in so that you can extract oxygen from it, and blow used air out so that you can rid of carbon dioxide which is the end product of carbon metabolism inside our bodies.

呼吸系统的主要功能是,吸入新鲜空气,以便获得空气中的氧气,呼出废气,以便排出二氧化碳,二氧化碳是人体内碳代谢的终产物

耶鲁公开课 - 生物医学工程探索课程节选