La Ni?a is a cyclical global weather pattern that has been linked to weather disruptions ranging from hurricanes in the Atlantic to flooding in Africa and South Asia last year.

• 拉尼娜现象是一种周期性的全球天气现象，被认为与多种反常天气有关，从大西洋的飓风，到非洲和南亚去年的洪水泛滥。