by 1937 in the ice-cream industry; by 1956 in reference to a nuclear reactor, from verbal phrase, from melt (v.) + down (adv.). Metaphoric extension since 1979.
实用例句
1. 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。
来自柯林斯例句
2. meltdown on the New York Stock Exchange
纽约证券市场的崩溃
来自《权威词典》
3. A meltdown at the reactor had only just been avoided.
险些发生核反应堆熔毀事故.
来自《简明英汉词典》
4. Urgent talks are going on to prevent the market going into financial meltdown during the summer.
正在进行紧急会谈，以防止市场在夏季出现金融危机。
来自柯林斯例句
5. Experts have not ruled out the possibility of a complete meltdown.
