In a boiling water reactor like those at Fukushima, the same water that cools the reactor core also boils and drives the turbine to generate power.

在像福岛核电厂的沸水反应堆中，冷却反应堆芯的水还拿来煮沸，以此推动涡轮机旋转从而产生电量。

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Now the next slide gives you a simple version of a boiling water reactor, a schematic.

现在，下一张幻灯片会给你们一个简单的，关于沸水反应堆的原理图的版本。

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We have again the core and as you recall in a boiling water reactor the main feedwater goes into the reactor and comes out as steam and goes right to the turbine.

这里还是核心，你们记得，在一个沸水反应堆里，主要的供给水会进入到，反应堆，然后出来，变成了蒸汽，然后会直接进入涡轮。

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Because this was a reactor that operated on water that was already at its boiling point, this also meant that the pressure inside the reactor was rising as well.

FORBES: Explainer: What Caused The Incident At Fukushima-Daiichi

There are a number of different reactors in use, most commonly water-cooled pressurised or boiling water reactors - though other reactor types are kept cool with the help of liquid metal, gas or molten salt.

BBC: Will Japanese crisis curb the rise of nuclear power?