The U.N. Intergovernmental Panel on Climate Change said in its most recent report that cloud formation was one of the biggest unknowns in climate predictions.是什么意思_The U.N. Intergovernmental Panel on Climate Change said in its most recent report that cloud formation was one of the biggest unknowns in climate predictions.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句