Laboring muscles burn oxygen rapidly and pour out waste carbon dioxide.

劳动着的肌肉能迅速燃烧氧气，放出废料二氧化碳。

youdao

To my mind, the reports talk too much about the carbon dioxide produced by the trucks that deliver the fresh goods to the shops and take the waste away.

在我看来，这些报告过多地谈论了卡车产生的二氧化碳，而这些卡车把新鲜的货物运送到商店，然后把垃圾运走。

youdao

Carbon-zero schools are ones that promise to stop emitting carbon in seven areas, including where they get their food and how they use water and recycle their waste.

“零碳学校”是指那些承诺在七个方面停止碳排放的学校，包括获取食物的地方，以及使用水和回收废物的方式。

youdao

That would be odd, though, since it would be a waste of valuable carbon.

ECONOMIST: Bacteria and climate change: Invisible carbon pumps | The

Waste steam and carbon dioxide from a nearby factory will be pumped into the glasshouse, providing heating and a boost to growth.

BBC: NEWS | UK | England | Tees | Factory fuels year-round tomatoes

Method is also re-using waste and reducing carbon via its distribution channels.

FORBES: The Cleanest Company in America