Scientists warned that emergency cooling systems could fail and a reactor meltdown could occur.

科学家们警告说紧急冷却系统可能失灵，核反应堆的堆芯熔毁可能会发生。

《柯林斯英汉双解大词典》

It didn't come as a shock to learn that the fuel and cooling systems are the most common causes of breakdown.

不足为怪的是，燃料和冷却系统是故障的最常见原因。

《柯林斯英汉双解大词典》

Emergency cooling systems have to be available for weeks.

应急冷却系统必须能够正常工作数周。

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The earthquake and tsunami damaged cooling systems at all six nuclear reactors there.

VOA: special.2011.05.24

These will include more modern air cooling and heating systems.

VOA: special.2009.05.22

The massive quake knocked out cooling systems to reactors at the country's Fukushima nuclear plant.

BBC: Dounreay reports on tsunami and earthquake resilience

Staff also misunderstood problems that arose with the cooling systems for reactors 1 and 3.

BBC: Fukushima accident: disaster response failed - report

Waves knocked out cooling systems to the reactors, leading to meltdowns at three of them.

BBC: Power at Fukushima nuclear fuel ponds restored