So that is the emergency core cooling system for a pressurised waterreactor.
所以，那是紧急核心冷却系统，对于一个加压水反应堆而言。
2
But even after shutdown, there is residual heat that needs to be drawn off by coolingwater pumped through the reactor core, and that’s where the trouble came.
但是即便终止之后，依旧有余热存在，需要冷却水泵抽水注入反应堆芯将热量散去，这也是问题所在。
3
This, we now know, is what "well prepared" looks like: total loss of power at the Fukushima Daiichi nuclear reactor, which deprived the reactor core and spent-fuel pools of coolingwater.