They can even use those stacked cells to see how out of focus different parts of an image are in different layers.

它们甚至可以使用这些堆叠的单元格来查看图像的不同部分在不同图层中的失焦程度。

Product managers Sylvie Childs says it's only emission is clean oxygen.To make the car run, you need oxygen and hydrogen which in the fuel cell stack, I mixed there's a chemical reaction and that produces electricity.

产品经理Sylvie Childs表示，该车唯一排放物是清洁的氧气。为了让汽车运行，燃料电池堆中的氧气和氢气是必要的，我混合它们，产生了一种化学反应并继而产生了电能。

The unit cells stack together in the same way, but sometimes an impurity will cause them to take off at an angle or make them more likely to stick to one part of the crystal than another.

晶胞以同样的方法堆积起来，但有时某种杂质物质将导致它们在某个角度分开，或者使它们更贴合于晶体的某一部分。