单词pea souper
na.: 〈英口〉(尤指伦敦的)黄色浓雾
〔英口〕(尤指伦敦的)黄色浓雾
Things have improved, in particular since the 1950s when coal fires caused pea-souper fogs that killed thousands.
现在情况已有好转，特别是上世纪50年代燃煤产生的黄色浓雾造成数千人死亡之后。