So there are no emissions of any gases to the atmosphere.

所以没有任何气体排放到大气中。

We can compare the cost per unit of the current way of doing it to the approach that creates no emissions.

我们可以比较当前方法和零排放的方法的单位成本。

It can help us finally achieve the promise of nuclear fusion, providing abundant, cheap, clean energy with virtually no emissions.

它可以帮助我们最终实现核聚变的承诺，提供丰富、廉价、清洁且几乎不排放的能源。

After looking at renewables, hydroelectric and wind power are the cleanest sources of energy, producing very little to no emissions or impact on the environment.

在研究了可再生能源之后， 水力发电和风力发电是最清洁的能源，对环境的影响很小甚至没有。

Because it creates virtually no emissions and  the volcano provides a constant source of heat, it's a completely renewable and clean -  if somewhat terrifying - form of energy.

因为它几乎不产生任何排放物，而且火山提供了持续的热源，所以它是一种完全可再生和清洁的——如果有点可怕——能源形式。