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

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。

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Experts' estimates of carbon dioxide emissions are based on fuel going into power plants and complex formulas that calculate power plant efficiency.

专家对二氧化碳排放量的估算主要依据进入电力厂的燃料以及计算电力厂能效的各种复杂公式。

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Such activity is essential to life as we know it, because it helps enable complex chemistry and recycles substances like carbon dioxide into the atmosphere, which keeps Earth warm.

我们知道，这样的板块活动对生命形成来说必不可少，它不仅有助于产生复杂化学过程，而且促使物质循环，比如释放二氧化碳进入大气层，使得地球保持温暖。

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