An ageing nuclear reactor is an accident waiting to happen.

老化的核反应早晚故。

Its radar equipment was powered by a nuclear reactor.

其雷达装置由一核反应提供动力。

A meltdown at the reactor had only just been avoided.

险些发生核反应熔毀故。

A nuclear reactor is the apparatus in which atoms are split.

核反应是裂原子的装置。