acid rain

短语
★☆☆☆☆

酸雨

发音

US

词形变化

acid rains 复数 acid rains

释义与例句

n.
  1. 1.

    Rain which is unusually acidic (pH of less than the natural range of 5 to 6); caused mainly by atmospheric pollution with sulphur dioxide, carbon dioxide and nitrogen compounds.

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    酸性雨

    可数 不可数

词汇关系

名词

上位词 1

air pollution

词源

Coined in 1872 by Scottish chemist Robert Angus Smith.

来源：wiktionary