melt down

名词 melt down:

1. severe overheating of the core of a nuclear reactor resulting in the core melting and radiation escaping
   同义词：meltdown, nuclear meltdown
2. a disaster comparable to a nuclear meltdown
   同义词：meltdown

动词 melt down:

1. reduce or cause to be reduced from a solid to a liquid state, usually by heating
   同义词：melt, run