An ageing nuclear reactor is an accident waiting to happen.

老化的核早晚会出事故。

Its radar equipment was powered by a nuclear reactor.

其雷达装置由一核提供动力。

A meltdown at the reactor had only just been avoided.

险些发生核熔毀事故。

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

核是分裂原子的装置。