全球面临特大山火威胁，警惕升温至尊

　　Australia, California, Siberia, Sweden, Portugal, Greece, Amazonia...: for more than a decade, the litany of "megafires" has been in the news, so frequently now that one catastrophe chases the previous one in people's minds. Many have forgotten that in 2016, in the oil-rich city of Fort McMurray (Canada), uncontrollable forest fires reached the city, causing the evacuation of a... (展开全部)