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》

And you have to have also, if you have an emergency core cooling system, you have to be able to compensate for the worst failure of any component in that ECCS system.

你们必须有，如果你们有一个紧急的核心冷却系统，你们必须能够补偿在ECCS系统中，任何组件所产生的最坏的失效情况。

youdao

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。

youdao

Those operating reactors with lower risks of flooding or earthquake, better emergency cooling systems and more robust power supplies might see themselves as having little to learn from it.

ECONOMIST: Safety

On site, the workers in its number one reactor appear not to have been familiar with an emergency-cooling system called an isolation condenser, which they wrongly thought was still working after the tsunami.

ECONOMIST: Banyan

Cities across the Northeast designated cooling centers and have issued advisories in an effort to help keep residents safe, according to emergency management officials in several cities.

CNN: Heat wave sweeps across U.S. Northeast