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》

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

Emergency cooling systems could fail and a reactor meltdown could occur.

紧急冷却系统有可能失灵，核反应堆有可能发生堆芯熔毁。

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