And in Central America, a dramatic increase in gang violence in Guatemala, Honduras and El Salvador has fueled migration northward.

在中美洲，危地马拉、洪都拉斯和萨尔瓦多的帮派暴力急剧增加，助长了向北迁徙。

Sierra Leone now regularly experiences extreme weather patterns, particularly abnormally heavy rainfall or delayed rains, both of which can lead to crop failures and in turn fuel the migration of people from rural areas to cities.

塞拉利昂现在经常经历极端天气模式， 特别是异常的强降雨或降雨延迟，这两者都可能导致作物歉收， 进而推动人们从农村地区迁移到城市。